A few of the guys are running the Avon Storm 2 ultra and seem to really like it. Maybe they could add some comments.. I haven't tried them yet but will be going that way soon. It's a multi-compound tire. http://www.avonmoto.com/products/spo.../storm-2-ultra
As far as mixing brands go, all I can say is that I've always done it and never had any problems. It might make a difference on a race track.. I dunno.. but for what most of us are doing I can't see it being a problem. Just don't mix types.. i.e. don't mix radial with bias ply.
That's an old thread you dug up... I know I've seen more recent comments somewhere around here lately!