In reply to fxceltic: I've got a theata AR, which is great (the arc'teryx website will let you know what the letters after the name mean, but the main three for shell jackets are LT (light weight), AR (alround), and SV (severe weather).
My theata AR has been scuffed from climbing and ripped after an ice axe went through it. Its still useable thought, so after carefull reflection I wouldn't bother with the LT models, which are Gtx paclite, or a mix of paclite and XCR.
You could probably get away with one if you are a "most of the time" softshell user, but in Britain, with our wonderfull weather, you find your self pulling the shell out of the pack more often than not. So with the weather and climbing, the jackets got to take a battering. I'd go for the AR or the SV models, there is not alot between them, although the SV's design seems slightly better, although more expensive.
If you buy from an american ebayer you can pick one up for 200 squid brand new.
Hope the advice helps. All the best.