That's awesome! I'm so glad you had a good time. Sounds like you have good instructors, too. I would find following a route through France to be very motivating.
I like heart rate monitors because I can tell what "zone" I'm in. I like knowing that I'm at 75% of max instead of just guessing. I left the "watch" part of my HR monitor on the bike a while back, however, so now I have to get a new one.