I'm going to disagree, I think the ES-100 is an amazing tire, it is inexpensive compared to many others, but it has great traction, not the best temperature handling, that's my only complaint. Phenomenal in the rain too. They've always been noisy tires, and it gets worse as they wear, but it's a tradeoff for the performance you get from them. I can't imagine anyone would say they have poor traction unless they were driving them in freezing temperatures as it is very much a summer tire. I've run 3 sets of them on 2 911s and 2 sets on my WRX. I'd run them again if yokohama was going to start making them again.
Chris, my question to you is when you said your sidewall was out of round... what do you mean by that? A sidewall can't get "out of round" Unless you're talking about seeing bulges in the sidewalls which probably indicates hitting curbs at speed with them. I wouldn't be the least bit concerned with the road noise, but if you have structural damage to the tires, then YES you probably should replace them.