I started with a Walkera4 (yeah, I've heard all the jokes) and upgraded straight to a Trex 450SE.

I'm getting really really good at crashing now but after six months I've still not managed to break or even bend ANY of the aluminium parts.
I've bent more than my fair share of main shafts and feather shafts, but as they come in packs of 3 and 4 respectively this is expected.

I've read numerous posts on this forum about people breaking and replacing plastic parts and being worried that the extra cost for the alimunium parts will simply increase the repair bills. My repair bills for those parts so far is ZERO. You can't get cheaper than that.