I've got a 382 on the way, but not sure I'd recommend that as your first PAM...is a very big watch. The PAM subs are already thick watches and fairly large on the wrist, but the PAM 382 adds that its made from a solid chunk of bronze. I'm not sure what the weight is exactly, but its going to feel like two watches on your wrist not one.
I'd start with something a bit simpler to get the hang of the PAMs. I'm partial to the PAMs with a bit more going on with the dial or the more classic versions, so I'd check out the 363, 253, 090, 089E (ti), and 127, then maybe 1 radiomir as well.