I have Isis final record, best one they did, post-metal, wtf, they are still metal, they are sludgy, doomy, proggy, droney, metal:
GK, not really metal, more prog rock for sure, not my thing.
Cynic are like technical jazz death metal, don't usually like when bands are this technical, I much prefer the later Death records to this:
Karnivool are prob more rock than metal, a fair bit of Floyd going on here, some Tool and lesser known band Oceansize too, I think they are alright, don't quite match up to Tool though, here's their best which I have:
Best TT singles rank: 24
Best TT doubles rank: 76
TT stats site: http://mtftt.info/
Melzer, Rafa, Fognini, Murray, Pospisil, Ferrer, Haas, Dolgopolov, Almagro, Janowicz, Kohlschreiber, plus a lot more, mostly, if not all clay courters.