Well for starters, we call them 75's and 76's not the other way around. But here is a few notes
757-200's - all RR powered, with 180 min ETOPS, SATCOM, being configured for lie flat seats (like 20 done so far), GPS, most with EFB's and all with 2 jumpseats. Used on domestic, south america, europe and carribean
757-300's - a mixture of ETOPS and non-ETOPS birds, configured the same as above except no lie-flat first class. Used domestically
767-200 - the rocket ship of the fleet, all 767's have GPS, SATCOM, ETOPS, regular first class seats. Used on Europe and South America
767-400 - same as above but flown to Europe and Hawaii
We fly monitored approaches, RNP, and constant rate (VNAV) descents on all Non precision approaches