The 320 is a bit too high, the 1320 is much more in balance and will wear more comfortable, next the 1320 has a new movement that is hopefully more reliable than the P.9001 in the 320. Better wait, try the watch yourself and decide. You could also check out a 1312 as a reference as the case is the same as the 1320.
Dutchman, Panerista since 2014 and learning
PAM389 and PAM372 and a bunch of straps