Before you buy, how small is your wrist?
The reason I ask is, mine's 6.5" in circumference, which is slim. I bought a Pam 168 Regatta (40mm) about 2 months ago. After I received it and put it on, I realized that the Pam design was meant to be worn big, somehow the 40mm size seems timid.
So I ordered an inexpensive 44mm Pam power reserve from Joshua, and I really, really like it. It covers my entire wrist, but the lugs don't go beyond the wrist edges, so I think it looks just fine, and it's surprisingly comfortable.
I held out for a very long time because I thought I couldn't carry off a 44mm Pam, now I'm thinking what my next one will be. I'm not going to go nuts buying 8 different Pams, but there area few models I find very handsome.
So you may want to re-consider limiting your self to the 40mm size.