I had the same struggle, came between these or the P-zero nero.
In the end I chose the P-zero. Yes, alot more money. But, if you look at the reviews and comments for the two tires on TireRack etc... they are overwhelmingly more positive for the Neros. And look at the cars people put them on - all high-performance, and typically expensive cars. The kinds of cars that are driven by anal a$$holes. I figure if they are getting good comments by those folks, then they must be worth osmething. And i know myself, as mouch as I'd love to stay on top of rotation, maintanance etc, I know it just won't always happen... so I'd rather just not have to worry about it as much.
After ~500 miles, I'm definitely happy with them. We'll see in about 10k.
FYI, I got my Neros installed at Discount tire for $130 each, that includes everything and a hazard warranty (discount Tire includes this automatically).