I've got them all round at the moment and not had any problems. Grip in dry is good, in wet it's ok, people bang on about the sidewalls being soft. I'm no expert, but even I can kind of understand why people say it.
I need two new front tyres as well, I think I'll go for Rainsport 2s as they seem to be rated on CS.
EDIT: Scrap that, the place round the corner only has V12s in and I need them fitted for Monday so I might just get them again.
EDIT: Found another place that has them, got for Rainsport 2s.