You dont want to know what my latest Canon L glass cost in that case.BigAl : I've pretty much decided on the Sony, since the deal from Makro is actually VERY good...
As for lenses, I know they'll cost me a bomb, but I do remember almost buying a camera that used 4/3rd's(I think it was called) lenses and holy cow they were STUPIDLY expensive... but the Sony lenses look like they're reasonably priced.
Fortunately sigma and tameron do make some nice glass.