Best fleet in terms of job satisfaction seems to be the 330 as they normally take turns flying and foreign crews seem to be accepted more as part of the team.
777 expect to basically become a CRZ CPT and only land to maintain currency, except for domestic sectors where you'll be a normal PIC when the time comes.
787 seems to be the worst in that regard as most of them have to keep operating with an LTC on the right hand sest almost indefinitely.
Right now LHR is on 787 but that could change anytime if they decide to swap acft type for that route.
Lastly, weather you reach the 80 hours sooner or later is irrelevant as what really matters are the days that you're gone from home. So pick your type in regards to geography and not flight time.