I don't think not being Chelsea's first choice is a reason to bash Cech. At the time he would have been no1 at pretty much every other PL club. It was just unfortunate that Chelsea also had another quality keeper - one who will be around for years to come.
Aside from the fact that it was our only signing that summer, I was pretty pleased at the time that we got Cech in. But he is in decline, that's clear as day. I don't imagine he'll win us the 15 points a season that people often quote. I think selling Szczesny without getting in a keeper to compete with Cech was a mistake.