Otherwise, between the 270 and 233, you can't go wrong with either.
If you're used to automatic winding watches, then the 270 is your choice. PAM233 is manual winding.
PAM270 is advertised as a 10-day power reserve, but the PAM233 has 10-days power reserve as well even though it's advertised as 8 days.
Cheers,
Anthony