Erik Commons, not suprisingly.  Since Kaneva is windows only right now and I usually only rock a mac or linux I'm not on here much.  Besides, despite its many downsides, SL is still quite the superior world, in my opinion.  More options, better graphics, bigger creative community.  Just have to know where to look.  Kaneva has potential, but since they're not giving all platforms a chance yet, just the big Windows crowd, they are really limiting themselves.