Those are all amazing bikes, good enough to handle anything anyone could ask them for. You could make any of them lighter with all kinds of carbon goodies, but what will you really loose in the end? taking a 15 lbs bike and making it a 14 lbs bike, will you really notice that? doubt it. cheaper and more effective to take 10-15 lbs off you, you will also notice the change a lot more. I'm 45 and ride a 10 year old 18 lbs bike with really no upgrades over the years besides a saddle and tires, I hold many local strava segment trophy's against dudes riding much nicer bikes and 20 years younger than me. Time on the saddle is worth a million times more than time at a bike shop. If you have the money to spend, spend it on a coach, changing your training will make a bigger difference than a frame.