This case was posted in the bargains section maybe of interest see link below. Price is £49 but was £100 not so long ago and is high quality from what I read. Worth investing in a nice case IMO but I can see your sticking to a mid range budget and it will bump up the cost to go for an aluminium case.
http://www.komplett.co.uk/k/ki.asp?sku=301965&cks=SER
My previous rig with Panaflow 80mm fans was quieter than the Antec so the 120mm are not exactly essential to a quiet PC
The XP120 cpu cooler in terms of mainboard compatability is a not very good. It may fit your current build but what of the future? There are no such problems with the XP90 which fits all mainboards and not much difference in performance or noise.