FWIW, I've had my Yokohama ES 100 tires (205-45/16) for a 10 days now and thought I'd report back. I haven't gone up in the mountains yet, but in spirited city driving that they seem at least as "sticky" as the Bridgestone Portenza's they replaced. They have also done well in our recent rains. They are a bit noisier, somewhere between the Michelin's (worst) that came on my 2000 and the Dunlop's (D6s??) (quietest) that replaced them. The biggest difference I have noticed is that they ride harshly over pavement joints and small bumps. All in all, I like them better than the Bridgestone's and much better than the Michelins, but liked the Dunlop's I had on my 2000 best (no longer made). Next time I may try Dunlop's.
Randy