I haven't ridden SP or VIR yet... but I have used a few different tires... Granted, wear and grip will vary with each track. These experiences are on Eagles Canyon Raceway, Motorsport Ranch - Cresson, Motorsport Ranch - Houston, and Texas World Speedway... all tracks in Tx...
Fairly smooth surfaces except for cresson which is a bit rougher and wears tires down pretty good...
Pirelli SC3 - good grip, decent feel and wear, handling felt a little off (Probably caused by the 60 series front that i didnt realize i accidently ordered until it was mounted)
Pirelli Rosso - more of a street tire, wouldn't recommend for Advanced group. Good wear, grip is ok for B and I groups
Michelin PR3 - i know they dont make this one anymore but there are still deals to be found on old stock thats still new enough to run on.. Good grip bit a little slick if you don't watch your temps and pressures. can take a few laps to come up to temp if you aren't using warmers.
Michelin Power One - Good tire. once up to temp, only had slight issues with then at lean... didnt feel as sure footed as i would have liked.
Michelin PP 2ct - a street tire i know.. but when the rain hits, watchin the guys on slicks barely carry any corner speed while you pass them is nice
Dunlop NTec Slick - WOW
Bridgestone BT-002RS - Good tire.. loved it. good grip and feedback.
Bridgestone BT-003RS - Great tire. Loved it. Good grip and feedback.
As mentioned.. alot of variables exist that can help or hinder a tire. track temp, air pressure, suspension type and settings... how heavy you are with the throttle...
My comparisons were done on a 2007 ZX10, Stock suspension, that was slightly tweaked for me. Like you I'm a little on the hefty side for this game... but at 230lbs, whippin the liter bike around like a 600 wasn't an issue. As also mentioned, I'd agree to get the best ones you can afford. And everyone has preferences.. so get something, keep an open mind.. and see what you think. If yoiu like it stick with it, if not, Then move on to the next