I failed to mention that my front rotors ARE cryotreated - definitely helps them sustain a good beating!
I ran with TracQuest at The Glen. They primarily organize west coast events, but do a few a year at The Glen as well as Mid Ohio (a track I want to run next year)
As to speeds, I didn't get much over 125MPH heading to the Bus Stop - but I was driving VERY conservatively (after watching a fellow instructor ball up his 911 on the 1st lap) and think in the dry I would see 135 or so. I really like that track
Perhaps we'll see you there next year! Sorry I missed your "Northern" exposure this year, but we'll try and hook up during the upcoming season - I plan to spend a lot of time at the track