Add me as another very satisfied Performance Ultra II bibs wearer. Check the coupons, wait for a sale, and give these a try. If you're near a Performance shop, even better, you can try them on.
In a previous lifetime (over 20 years ago), I was a huge fan of Assos, and if I had the spare cash now, I suspect I'd be again.
However, for the money, the Ultra IIs are really nice.