I am 5'1", 28-inch inseam, riding a Ruby Expert with full Ultegra...Love, love, love it! I was riding a Cannondale WSD with 650c wheels before that and noticed a distinct difference in my ability to stay with the pack on our club rides when I upgraded to the Ruby. Don't know if it was the change in wheel size or just the overall geometry and 1-pound weight loss of the bike that made the difference, but I feel like it was a match made in heaven