I guess everyone's mileage varies; I thought POTC 2 was the most fun of the three, and POTC 1 the most disorganized and chaotic. But then, I have a bit of a grudge against POTC 1 because of the ridiculous stage business that depended upon the audience believing that a wealthy, healthy young woman who grew up in the relevant time period would pass out because she was wearing a corset.

If you haven't seen POTC 2 at one shot from beginning to end, I can see why you wouldn't have enjoyed it that much. You should rent it sometime and watch it in the proper order; I think you'll like it much better.