I'm just finishing up my MXS-R 60" build. Not a bad ARF for the price. A bit heavier than a 3D Hobby Shop build.

I had a chance to fly the MXS-R for one short flight last night and another this morning. Nice flyer. So far, power seems to be good. Flew most of the flight on 1/2 throttle or less. Just low rate flying so far. Easy to land.

Only two issues:

The wheels were jammed against the wheel pants, and this complete 'lockup' of the wheels caused the landing gear mount to pull right out. I blame myself for not checking this prior to taking off this AM. Simple repair, very little damage.

I also might need to adjust the motor thrust angle, since the more throttle, the more the nose wanted to go down. I was wondering about this, since the motor mount seem to be somewhat more down thrust angle than I was used to.

Here are the stats:

ArfMfg / GoldWing 70 class 3D http://www.arfmfg.com/en/ProductView.asp?ID=198
(purchased from http://www.generalhobby.com/arfmfg-m...een-p-364.html)
60" WS
Monster Power 46 motor from HobbyPartz (same as Tacon 46)
60 HobbyWing Platinum ESC (90A burst)
4S 4500 lipo battery
4x BlueBird DMS-661DMG+HS High Speed Metal Gear servos
16x8 Xoar prop
AUW 5 lb 14oz

Pulls ~75A full throttle static, 1125W.

Should be enough power for sport aerobatics, but borderline for 3D.

UPDATE - Now that I've flown this plane a lot more, I'd say it has plenty of power for simple 3D and more than enough for IMAC style aerobatic flying. I've hovered it and done a variety of the simpler 3D maneuvers. It flat spins very nicely both upright and inverted. Knife edge flying is very nice.

But I'm still hunting for the right stick positions to get a knife-edge spin!

I picked up a Precision Aerobatics Extra 260 at a swap meet last fall. The first time I've ever actually swapped planes. Plane came all built, minus ESC and Motor. I picked up an inexpensive 100g motor and used a 40A ESC I had sitting around. I've been flying it with old 3S 2200 packs, and it performs really nicely. Very precise. Very low wing loading makes it super forgiving.

It has small wheels and wheel pants, which don't work well if your grass is long. Fortunately I've been flying it off of the fabric landing strip at the club field and it works well for take offs and landings.

I've had a chance to fly this a bit. Performs very nice. Very low wing loading + high rates makes for some fun inverted flat spins and tumbling!

Motor: Exceed RC Rocket 3015-1100KV from HobbyPartz.com
Servos: 4 x HS-65
40A ESC HobbyWing
3S 2200 25C lipoly packs
12x6 APC electric prop
AUW 2 lb, 4 oz
45A static, ~450 W at full throttle static
~200 W / lb