Went for the P182SE in the end. I have one HDD and one GFX card (8800 GTS), so space isn't a problem. The cable management and looks of the 182 appealed to me, the extreme cooling of the 900 wans't needed as i'm not planning on seriously overclocking, though if I was i'd probably watercool anyway, which the 182 can do quite well if I wanted it to. I'm sure the cooling in the 182 will be miles ahead of my Akasa Zen, which was the aim to improve on.
Thanks for all the info guys.
Thanks for all the info guys.