Go with the SSD and the mechanical drive and have the best of both worlds!!!! Also, you should build the computer yourself; it's not as hard as it seems and there are plenty of resources on the internet. I looked at www.buildyourbox.co.uk, and they seemed to be way overpriced. You would spend less money an have better performance if you did it yourself. Checkout this article for info on SSD's: http://www.tomshardware.com/reviews/ssd-nand-reliability,3021.html;
and this site for parts: www.newegg.com. By the way, the raptor is a huge ripoff....I mean huge.