I own the 42mm PAM728 with the in house movement.
Small wrists @ 6.3 in. Originally wasn't toi interested in panerai as 44mm on my wrists look ridiculous. The PAM728 caught my eye for a couple reasons:
1. Stunning blue dial
2. Low profile - easily slides under a cuff, nice and light titanium case. Super comfortable to wear
3. In house movement and 70 hr power reserve
Attached are a few pics for reference. I like the 42mm size over the 38 because even though I have small wrists - I feel panerai should be worn larger
For me, that just can't be a chunky 44mm-47mm piece