These tires are fantastic!!!
They have had their 500 mile break in and some good runs on the twisties. They grip like nobody's business. Turn in is great and I find no understeer. They are great in the rain and the ride is good. With the top up, there is some tire roar but it is a white noise and not bad. Can't hear it with the top down.
I autocrossed them today and

!!! They are extremely predictable at the limit and have incredible grip. My first run was based on the butt-based g-force sensor tuned to my old tires (the stock GS2s) and I did a 54s run. I laid into it the next run and dropped 7s. My best run was a 46.8 with some wonderful 4 wheel drifts. Again, no understeer unless it was my fault. I believe there is another second or two left in them. The FTD was a 41.7s (or so) and my fast time was better than some with R-Comps. But, most importantly, it was a blast!!! This is now the car I really dreamed of - it just does want I want and goes.
So, yes, these things cost. But all this fun and a 30k treadlife warranty? How 'bout them apples!!