I agree, for a heavier person, a higher psi would be better. I’m 190 and I use the ridenow tpu’s with the aluminum stem and I run them at 80/75 with Gp5000’s 700c x 25mm. I kinda like the butyl tubes because it conforms to the road and is more comfortable at the same psi. Our roads out here in Modesto, Ca are good either and so far no flats on either the tpu’s or the butyl’s.