Nitroplanes GuanLi Me-109 ARF

Like the others in this series, it will indeed fly fine on the provided brushed motor and nimh battery.  Flight times are maybe four minutes, though, and power is okay at best.  With this one, I definitely recommend going to an 11v lipo to get the extra power, as the plane has a tendency to tip stall if you get too slow, it's not very forgiving that way, be careful.  But it does fly nicely.  It's worth upgrading this one to brushless.  The landing gear is pretty useless, too narrow, but it hand launches very easily and looks better in the air without the gear anyway.  The paint job is very nicely done, looks great.  Construction quality is good.  I'm having fun with it.

Nitroplanes Guanli PBY Catalina Seaplane

It's a wonderful plane. It took about an hour for me to get it together. There is nothing particularly noteworthy about putting it together, except things will go much faster with five minute epoxy instead of the provided contact cement. Every single item is included, even a screwdriver and glue. The only thing you need to provide is 8 AA batteries for the transmitter.
So...how does it fly? Just great. With the provided brushed geared motors and NIMH battery, it has adequate power to fly around nicely, and will loop from a shallow dive. It is extremely stable, and extremely easy to fly. It could be a first or second plane. Hand launching is very easy. It will also get off water or snow. If you plan on flying off water, you will probably want to add a water rudder to help steer it around after landing. If you are flying off anything but soft grass or water, you will probably want to add some clear packing tape to the bottom of the fuselage and wing floats to prevent them from getting scratched up. Do not attempt to fly it without the provided wing struts, they are needed, and stay away from any wild aerobatics that might give the wing negative G forces, it's not really stressed for that. The plane is plenty strong for normal flying, but it's not an aerobat, nor was the real PBY Catalina. It looks best doing a low pass or touch and goes off the water. It's extremely light, and will fly very very slowly, it's hard for beginning pilots to get into trouble with it, and the flight charachteristics are certainly suitable for park flying.

Flight times are around 8 minutes with the provided pack, and the wall charger takes about an hour to refill the pack. The 27 MHZ radio works fine, it occasionally glitches here and there, but recovers right away. Keep in mind that range is not unlimited, keep the plane withing 500 feet of you or so, and that you are subject to interference from many other toys and other devices out there. It would be very easy to install a different receiver, but, again, the provided one is perfectly adequate. Do make sure your receiver antenna is stretched out all the way to the tail, that you have fresh batteries in the transmitter, and that you range check your system before you fly it.

As far as upgrades go, if you change the installed connector, you can put in an inexpensive 12c 3 cell 2200mah lipo battery. It will fit flat on the tray right above where the NIMH pack went, and will stay where it is by just a friction fit between the tray and the fuselage and the pushrods. The extra power of the 11v lipo makes for a dramatic transformation...power is now much more than is needed, she will climb out at a 45 degree angle, and flight times are 12-15 minutes. Full throttle is rarely needed. Motor life may suffer in the long run, but mine has been fine so far, and it's a lot more fun to fly with the lipo pack. I feel no need at all to upgrade the motors to brushless, the provided geared systems are more than adequate to fly the plane very well.

It's a heck of a deal for $99, you really can't go too far wrong. I'm very pleased.

Nitroplanes Guanli A-10 Warthog

Construction quality and paintwork from the factory is excellent, no problems at all.  It took me about 20 minutes to put it together using five minute epoxy.  I left the landing gear off, I prefer to hand launch.  Be sure ot put some tape on the bottom for protection.

The plane flies fine on the stock NIMH pack and brushed motors, in spite of all the internet "Experts" saying it would not.  It will loop and roll, no problem, but it's modestly powered with the stock setup, and flight times are maybe five minutes, tops.
Swapping out the 650NIMH pack for a three cell 1300 lipo made a whole new airplane out of it.  Now it is fast and vividly aerobatic, and flight times are long.  I set a timer at eight minutes to make sure I do not overdrain the lipo and ruin it.  No reason why you could not put in a 2200 pack, either.
Beware of one thing, though...the way it is set up from the factory, there is way too much elevator throw, and you may kill it on the first flight attempt.  Move the control horn to the innermost hole on the elevator servo horn, and the outermost one on the horn on the elevator, and everything will be fine.
I am still using the included 27mhz radio.  It will occasionally glitch if I point the TX antenna right at the airplane, otherwise, it has been working fine.
I have put a dozen flights in using the 11v lipo and the stock brushed motors, and the motors and ESC are still going strong, so consider that before buying a brushless converson for it.  Power is a non-issue with the stock motors and a lipo batt.
The plane is stable and easy to fly, yet very aerobatic.  I like flying it in low and close, like the real thing.  
All I can say is the plane is better than expected in all respects, much better than the similar GWS offering, and it is well built and a super value for the money.  Great plane to keep in the back of the car and toss around whenever you see an open space.