Ok the 600 if your just learning wont be impossible but it will be like most other 50 size nitro birds. It will be more stable than any of the others but the initial cost, is what is keeping me from it. about $2000.00 complete without a transmitter. I would suggest this if you have some time on a rex already not as a first heli. As far as the 450's go i would go with the HDE if its your first. or if you know someone who can setup ccpm go with the CDE. The SE is for a more advanced flyer. its more zippy and anglee twords aerobatics. I personally have a 450xl CDE and love it. if you go with this you'll need these two videos. they are from Fineless on helifreak(thanks bob) and he will show you exactly how to setup a CCPM heli. also you should check out his build videos of the HDE version. But if its your first heli stick with either the HDE or CDE 450xl's. check out www.helifreak.com and go to Finless Bob's Helifreak Tech Room. its the second subcatergory down. in there you will find everything you need to know about setting up a heli.


CCPM part 1 - http://video.helifreak.com/tmp/60dbb...?downloadmedia
CCPM part 2 - http://video.helifreak.com/tmp/9dc5d...?downloadmedia

I started with a Blade CP and making the jump to a rex was effortless. I would suggest mainly starting with this because its cheap and RTF out of the box. A rex RTF is around 600.00 w/o the transmitter while the blade is 200.00 w/transmitter. so this is a logical starting point.

but its up to you where you want to start.