Well I've been thinking about it for the last few days and I think I'll get the trex 600 anyway.
The smaller helis get also expensive and I don't think you get much more than the 450.
Since I tried the 600 and like it, I'll spend a bit more and get it.
The size difference really shows when you try it.
My radio is good and the whole setup with batteries will run me at about 1k.

Well...
Nobody said this is a cheap hobby (LOL)