Zach,

In addition to my Trex 450SE, I have one of these helicopters:

http://www.cnchelicopter.com/servlet...50B/Categories

The 3DX 450B is a great helicopter. I have always felt it flies smoother than the Trex.

These guys produce very high quality stuff (stay away from the Walkera stuff at any price). I have bought all of the "bling" aluminum upgrades for my Trex 600 from them. Great stuff.

Many Trex parts are interchangeable. The ones I know for sure are the mainshaft, boom, main gears, bearings, feathering shaft, belt, etc.