Mate,
we need more info than that. None of the current manual Cartel PAMs can be considered "best one to get". What are you looking for in a PAM?
word of warning, there's a rumor (so far just a rumor) that a new batch of better looking PAMs are coming. So I'd wait a little.
I also suggest you read reviews around the forum. There are many good looking Pams around, many that come up for sale (already modified) from trusted members.
Davidsen is one of the best dealer for Pams around. I'd look at his watches first if you are looking for manual Pams.
http://www.rwgforum.com/forum/72-davidsenjpn/