On my newest bike I’m running 700 x 38mm Compass/RH tires set up tubeless. On my most ridden bike, which
Soup_Please hasnseen in person, I’m running 700 x 35mm Compass/RH tires with tubes. I really thought the 35s were ideal, great balance of cush and speed. At first, the 38s felt sluggish, but after about a 100 miles, I realized my avg speed was a tick faster, and the overall smoothness of those fatties is really terrific. It’s not quite an apples-to-apples comparison (though the newest bike was based on the specs of the other one), but a bit of a breakthrough for me.