Good to know. I'm toying with the idea of a new bike, but if I spend serious money I can only do it once. I've read a review of the Aeroad\Ultimate\Endurace and the reviewer stated there was a clear distinction in comfort. However, if they're pretty close, I'd go for the Aeroad as most of the riding I do would be relatively flat. I'd rather have more flat speed than climbing speed. I don't want to be massively uncomfortable tho! Currently riding a Reynolds 525 steel bike from Ribble so it's quite a comfortable ride.