I purchased an F65 this past February, and have put about 200 miles on in the last two weeks (it's tough when you have a full time job, a kid, and a blended family). so far so good. It's agressive yet comfortable (I'm an old fart at 50). i did swap out the saddle (changed the stock Selle Italia Gel XO to my old Brooks B5 from my 70's Roadie Dawes... it was the right move). I'm used to the old roadie w/10 speeds... which basically means like 3-4; the Ultegra is seamless, gobbling up the hills. I love the finish and design. all around a great ride.