I second anything this Dude says…he has crazy cool hair and smokes a pipe, and that equals respect in my book. It would probably have been easier to have a thread about ‘bad’ tubing or what to avoid. Although, I’ve owned some old straight gauge tubed bikes that I would have to do some bench presses and stretches before attempting a hoist to my bike rake that road rather nicely. So, everything is relative, refine your question to vintage lightweight race fames, and you’ll probably start a firestorm of an argument. (Oh, and throw out the part about "modern" tubing. It doesn't really apply here does it?)