Yes, wider tires are better. For years we were limited to 32mm wide on our older Santana. On our newer tandem, we went with 26", to allow much wider tires and also to simplify packing into cases when travelling. We now always tour on 50 mm (with fenders), it is so much better. For the small fraction of people that wish to race on smooth roads, yes 28s are faster. But for most people seeking fun on whatever road surface is presented, wider is better.