Another +1 for the Panaracer GK slicks. I built up my first 1x/all-road and opted for the GK in 38s and I barely notice any penalty of riding on much wider tires when compared to the 25s on my other bikes. When I finally pull the trigger for a Ti frameset, I'll be going with the same tires, but in 32s. Aesthetically, one of, if not the best looking tan side-walled bike tires available.
A gratuitous shot of the GK 38s the Mrs. took. These are also tubeless compatible which I’m switching them to this week.
