We bought PAP's for the first time last year, but before that we've always bought UPH's. After this summer trip, I don't expect to go back for at least a year, maybe 2. So, depending on what discounts are available then, we'll either do PAP's or UPH's. We never buy PHP's.
I normally buy PHPs but have booked the FT package for this year (unless better room only codes are released then I'll go back to the PHP). I wish I could go more than once a year, then I'd buy the APs.