Sean is probably right, but I would always choose the RVF400 (which is missing from your list!) just because even for a 400, it still has that 'wow' factor and is still a gorgeous little bike by todays standards!
Tough to find ones that haven't had the arse ragged off them though... It's a bit like trying to find an M3, or an impreza, that has been driven 'kindly' for it's life!
400's are a bit like 125s in that a lot of youngsters get them, who dont have the money or inclination to look after them and service them like they need, given the thrashing they normally get. But find a well treated one and it will give you plenty of years of good fun.
