If anyone wants to update the info in 1st post feel free, as there's loads of new drives and controllers out. I haven't been following SSD's since i made this guide, so i have only updated some of the information, some information may be incorrect such as raid capability of newer controllers, but overall it is mainly correct.
The best 60-80GB SSD's to get now are the Sandforce F-100 controller-based drives, ocuk's cheapest is the OCZ Vertex 2E which is £150.
EDIT: please can a Moderator delete posts, 6, 25-28,31,34,35,45,46,48 as they are no longer relevant and will confuse new readers due to better drives now being available and drives they are talking about are no longer in post 1, thanks. Once done please edit this request out of this post so that other moderators don't delete new posts.
Thanks.