I've got an OCZ Vertex 2E 120Gb that I bought in Sept 2010 for £215. It was expensive but so worth it, the load times for games as well as Windows make my machine feel like a super computer in comparison to what it was like before. I would never go back to conventional hard drive to run an OS.
Convinced the company I used to work for to get one to boost speeds and my boss couldn't believe the load times. I recommend them to everyone that asks me for advice on computer components and I want to purchase a separate one just for games now, but that will have to wait.