You should take a look at Lynskey frames if you're considering Ti. This is David Lynskey's company, the same guy who originally founded Litespeed, so he knows something about working with the materiel. Among their offerings they have both a touring specific frame (http://www.lynskeyperformance.com/st...s/touring.html) and commuter/cross frames (http://www.lynskeyperformance.com/st...ing-urban.html).