Well, if the bike is too small I wouldn't bother then. And if you are looking to ride with your wife on her hybrid you should match what she is riding, unless she just likes to poke along on the BG for a few miles and then it won't matter. (My idea of a ride is 50 miles at a decent pace, or a loop around Lake Washington, my wife's idea of a ride is one loop around the park, with a stop for lunch along the way.) I don't know anything about the bikes you mention. Try a bunch and pick one.