yeah try the 28s I think you will be very happy. I started commuting on a mountain bike with knobbies, then got slicks, then got a 700c hybrid with wide textured tires then got wide tires with less texture then got 28 slicks and loved them for years. I only recently moved to 23s cuz they came with a new/used road bike and honestly don't really notice a difference from the 28s, so who knows maybe you'd be happy with 23s! I weigh about 225 lbs. FWIW