Thanks for the responses. I went for the 60GB Vertex 2E in the end, it arrived last week and I've installed it in my MacBook Pro. At the moment I've just done a clean Snow Leopard install and in the process of installing my programs, but in general it does feel snappier (boots in 19 seconds, CS5 launches in 4 seconds!)
I'm just waiting for my Optibay to arrive (cheap version from China) so I can install my 500GB drive in the Superdrive slot and move my home folder there, and then move across all my docs. I've got an external USB DVDRW for the few times I need to use optical media anyway.
Just one thing, my SSD is on firmware 1.32, I noticed the latest is 1.33. Is it necessary to upgrade, and if so how without access to a Windows PC?