Hi all newbie here as you can see. I just bought a Trek 7100 for myself and a Navigator 100 for my daughter, both are great bikes. As an adult I think the 7100 would be better for you. I love mine and am glad I listened to my friend, as I was going to get two Nav's.. If you do choose the Navigator though, I don't think you will be sorry either, make sure you ride both before making a decision.
regards Tony