Wayne, I have been running Schwalbe ZX's both front and rear. 23 in the front and 25 in the rear. 115 psi in the front and 120 in the rear, latex tubes in both. On our ride today I lowered the from to 90 and it felt great, 117 in the rear, stoker just said that the ride was great.
Wayne, from Illinois, right now in North Little Rock, our daughter raced a road race and we rode the course in reverse (open course, with permission)