[gbanger]

Took the RB up this afternoon after finishing the mowing.
First flight was with a 4000 compact as far forward as it would go. It took off in about 5 meters at half throttle, a little trimming followed by a few straight and level circuits to get a feel for it and it felt pretty neutral.
I increased throttle to about 75% and did some scale aerobatics. Roll rate was a little slower than I expected but more than sufficient, the elevator is a lot more responsive and quite snappy.
I think the C of G could go forward a little but that would turn every landing into an instant accident. All in all it was very sure footed and does pretty much what ever you ask it to do without any fuss.
2nd flight on another 4000 moved back 10mm to stop the nose over on landing and help get off the ground without issues. Much better but was very floaty on final approach but didn't nose over.
Did some aggressive aerobatics and discovered that I could knife edge the fat little sucker, which was very surprising.
I did a low speed fly buy, pointed it at the stars and hit full throttle... the thing climbed vertical, I stopped and did a little prop hang at about 300 feet. This thing has power to burn.
3rd flight was on a 5000, noticed a big drop in performace due to the extra weight (Note to self: buy more 4000 compact batteries.
Very surprised, this ones a keeper.