Christ, I remember riding a bike with 19mm tyres soon after I started bike wankering. The move to 23mm was night a day noticeable. As was the move to 25mm. Probably won’t go to 28mm atm as I’m (was I suppose) happy with 25mm and don’t really believe that 28s will offer that much more.
@Jeremys_Iron fwiw, I’ve ridden a few tyres over the years and I honestly can’t see past the conti GP4000sii. Love my Vittoria tyres on the Lynskey, but those contis were brilliant. Had 2 punctures in their life span and were free speed effectively