Well, Thanks for the advice guys.
I guess what I was really looking was a "yeah, that'll work ok". I've definitely listened to what's been said, and for now my build is looking a little changed. I'm shooting for a early 2011 build, and a budget of around £1500-1600 max I think.
HAF-X - Despite a few people complaining, I still like the design of the case, and I have this crazy idea to use three different lighting effects (red,green,blue maybe) depending on my mood. Currently, it's around £130 mark
Rampage III Extreme - No change there, I love the black/red design, and the whole board looks good. Currently around the £230 mark
Nvidia Geforce GTX 570 or GTX 580 - Changing from the 480 which was about the best when I started looking at this build. I'm tempted by the thoughts of the 580 in three way SLI eventually. The only mitigating factor I can see if price, which will obviously change
Right now, the 580's are around £400 each
PSU - The reason I went for the silverstone was, it was over the top in producing power. It was more expensive I know, but I think its a combinatino of handling what's there now, with what might happen in the future (3 way SLI etc..) I might be over-doing it on power though, and would welcome advice on what else I could use. You are right in the price at £250 is high, and I could make a saving here.
CPU - I'm currently looking at the Core I7 950 3.06Ghz (Bloomfield) which is around the £200 area. Obviously, this & Memory are tied together and will change depending on the price in the new year. (Intel Core i7 960 3.20GHz is the next highest, at around the £400 mark)
Memory - I'm torn on this one. I've long been a user of crucial memory, hence the ballistix choice. I haven't heard bad things about them before. I looked at the Corsair, and the dominator series. The "memory selector" gave me a shed load of options, and I know that my choice of memory is affected by my choice of CPU. I'm looking at between 4-8gb to begin with I think.
CPU Cooling - Corsair H70 - I'm going to go with this, but I might exchange the stock fans for those Scythe Gentle Typhoons. The H70 is about £70-80.
The rest is dependent on the price of hard drives (particularly SSD's in the new year) I suspect SSD's will stay high for another year though, so I may buy a standard drive to begin with and then when SSD's drop, get a 120gb or similar as a boot drive.
I'd be interested to know what you guys think.. Like I said, it's been a long time since my last build.