that's how most people comment on the Trex... I dunno though I've never flown one

about upgrading to the lipo, go with a 3s and put atleast 1 heatsink on each of the motors, 2 if you can. The fuse mods and the paper clip mod will help you from burning out your 4 in 1, and that should be pretty much it. I would not go out and buy another heli unless you have alot of money just sitting around =)

let me know if you have any more q's