Comments:
PAM 25
The quintessential dive watch. Titanium is perfect, light and durable. A head-turner, the best watch I have ever bought. I thought I wanted the 24 until I saw the 25. Can anyone name another watchmaker that comes close?
There's really no other brand out there that has the same feel as a Panerai IMO
But those who like Panerai, a lot of them like AP Offshores, so if you're looking to dabble into another brand, you might like AP's.
Cheers,
Anthony
No real substitute for Panerai, its in a leaque of its own...
some old pics to entice you 
and other bigger titanium subs in 47mm... still very comfortable for its size...
cheers,
ed