Well i just got an intel 80gb, no frame of reference on the Vertex. With 74gb of space to play with, windows and apps will take up 30gb and leaves me 40+ to install my 2-3 favourite games on. I wouldnt want the vertex as 60gb, less 15 for windows, less 5 for format leaves you 40gb, and if the speeds are even comparable I would pan for the bigger size due to convenience. Few seconds here and there make no difference to an hour trying to figure our how to rearrange things and transferring them.
This is based on what you need it for though.
Having said that, if you are considering jumping aboard the ssd boat for the first time, I have yet to see it load games but performance elsewhere, whilst a lot snappier, isnt out of this world- a cut above definitely, but not different league- note this is coming off an old school 500gb wd not raided.