gotta say also that if you don't have a titanium rep, it's worth picking one up. even though it's a big ass panerai, it is not heavy at all which means that when combined with the right strap, it's about as comfortable as it gets.
that all being said, my 192 will not be leaving my collection come hell or high water. and the only reason why i never got the 172 was that i got a 192 at the right price and thought that the chrono jazzed it up a bit.