I've been very happy with PP (supplied with UK Amex) but, as has been suggested many times before, take a look at your travel patterns and which airlines (and more importantly, which terminals) they fly from. Quite often, PP is available at a given airport but not in the terminal you fly out of, and moving between terminals is often not allowed.

Also, bear in mind that not all PP lounges are particularly good. Ok, if you're in the US then you're in US standard lounges (i.e. cash bars) but even around the world, things are variable.

Obviously, having access to a lounge, even with a cash bar and, if you're lucky, a couple of booze vouchers is preferable to no lounge access at all.