Hi all, love all the information I can get here. I've been riding on and off for nearly 50 years now. I'm currently on a Trek 4500 mtb that i put road tires on and ride 15 - 20 miles a day. I also have my old (25 years old easy) KHS Express that feels like a brick when I ride it. I'm looking at a new road bike but want to be sure it will meet my needs and wants. I want to start doing more miles and possibly do a 100 mile ride by end of summer. I guess I'm looking for a bike that will be easy to ride and go faster than my Trek. Will there be a big difference between what I ride now and a brand new road bike? I'm 6'6" and am thinking I will need a 64cm bike. Does that sound right? I haven't been fitted yet but just talked with a LBS. Right now I'm looking at a Specialized Secteur Comp Apex, Trek 1.5 and a Trek 2.3. Only because these are available in 64cm. I just want to be sure the expense of a new bike will be worth it. Thanks for your help.