As of today the CoMax's have 135 miles on them. So far they are great. While maybe a half a pound more (ride weight... racks, bottle cages, etc) than the RX Composite's they pedal easier. That might be due to the tire size (stock 25s) as the RX's had 28's. But whatever Giant did a great job keeping the weight down especially when you consider the CoMax has disc brakes. Next trip to the LBS for cable adjustment (later this week) and i'll be able to post the current weight. Forgot to when we picked them up.... my bad. The one thing that kinda bugs me is that Giant as well as others will use mixed series parts on the drive train. This is the case with the CoMax 1's. They advertise an 11 speed Shimano system (which to my mind means 105's on the low end) and then spec out 105 cassettes, front and rear deraileurs. But use a low end RS500 crankset. So a trip to Amazon for my Ergon GP3 grips and a couple of 5800 105 cranks. Should be here later this week and will update the thread when this little upgrade is done.