I hit the curb at 140 pounds...

I am running 1.35 Comet Primos on my Twenty and run them at 95 - 100 psi as even at max they have a very nice ride quality as they have a very supple casing.

Noted that even when I ran them at 80psi they still had a very fast roll out with no discernible loss of speed.

Running 1.5 Marathons at their maximum yielded a much harsher ride and the rolling resistance increases more noticeably at lower psi.

Just picked up a Crank Brothers Power Pump that fits my frame very well, will handle the 100 psi requirement, and has a built in gauge and have a shop grade floor pump as well as a number of other good frame pumps that are just too big for the folder's frame or my backpack.