yeah me too, 'stuck' :) I have been using it for several years but I am getting a bit annoyed by it. I just don't think I extract enough value from the paid product. Also, I feel locked-in too...
+1 here, surprised to not see that it's not the top response here. It's always been slick, reliable and easy to use in a collaborative corporate environment. I would wager that Visio is probably similarly nice but I've never played around with it.