I would (and do) tour on an aluminum bike. A 1999 Cannondale T700 (caad 2). My wife has a 2000 C'dale T800 (caad 3). Both give exceptionally smooth rides, and we're lightweight riders.

Given that, however, I wouldn't tour on the two models you listed. You can get the Windsor Tourist for roughly the same money, and it'll do a much better job.