Yeah, think I'll end up there as well.
The 28s feel amazing WHEN the pavement is smooth. As soon as the quality goes to shit, I miss the bigger tires. 32 should be the sweet spot and is as big as the Vittoria Corsa Pros go.
Did some good long rides this weekend so I feel ready to do the metric centuries I've signed up for. If I can survive the climbs, I'll finish no problem. It really is amazing how easy it is to pace with a power meter.