I purchased this set of tires for track/autoX use on my Civic SI, I was attempting to find a well priced tire with a higher tread wear rating but good grip, something that I could get a full season maybe two out of. My first use of these was a 2 day event at Watkins Glen. The day consisted of 4x40min sessions which is longer than the usually HPDE session, and for the amount of abuse I put through these they held up very well, by the end of the day the only issue was a combination of my lack of camber up front as well as soft sidewall caused the tire to roll over farther than it should have an I got some pretty serious chunking along the outer edge of the tread. A camber kit and slightly higher pressures should fix this.
The grip level for these tires is pretty impressive, I have driven on PS2's and Star Specs and I'd say the grip level is just slightly below the star specs, the tires never really felt greasy during my 40min sessions so for the price I really do like them, I wish the sidewall was a bit stiffer, it was softened due to noise complaints I believe.
As far as comfort, ride and noise go, they ride fairly well for a performance tire, they are noisy so if you're looking for a DD tire this is probably not right for you its meant to perform. They are pretty comfortable on the road I drove 6 hours on my way back from Watkins Glen on these and really couldn't complain, I am on stock suspension but will update this soon now that I have HFP suspension on the Honda.
Over all for the budget HPDE / Track / AutoX driver I can highly recommend these as they are both budget friendly as well as a pretty impressive performer.