For longer rides on good roads when I want to push myself I use my Raleigh Competition GS since I find it to be a comfortable and very responsive ride. I also really like the Campy GS drivetrain which I think works remarkable well considering it wasn't Campy's top of the line stuff at the time. For those rides where I am looking to enjoy the scenery a little more I take my updated early 1970's Super Course or my 1989 Trek 520. Both have relaxed geometry and are very comfortable rides. I usually take the Trek if I am riding in an area where there are more hills as it is a bit lighter and has lower gearing.