Of the bikes you mentioned, I would recommend the 520. As long as racing is not in your future, touring bikes make excellent commuters and weekend leisure cruisers.

For a 10 mile commute, you are getting to the distance where you might want more hand positions (which drop bars are ideal for) and definitely where a rack is preferable to a backpack. The 520 is designed to be comfortable over long distances and to carry a load with ease.

With that said, test ride as many bikes as you can. Make the shop fit the bike to you (seat position at the very least) BEFORE you test ride.