Help me decide on a dinghy

Hello all, new to the forums. I've done some searching and reading on other people's dinghy decisions, which has just made me even more confused. I would love the impossible: For me to pose my conundrum and every one of you to point out the same obvious choice, so I know I'm doing the right thing.

I need to supply a dinghy for a new 50' catamaran. The dinghy sits on chocks, rather than dangle from a davit, so I can get something up to 650 lbs. I'd be happy with anything from a 10' RIB with a 20hp tiller to a 13' aluminum RIB with a 40hp and console. The latter will mean longer and faster outings and adventures, but maybe a bigger target for thieves?

I plan on living aboard for the next 10 or so years and cruising the world. I've lived aboard before and spent a decade as a yacht captain (mostly on power boats), so I have some boat knowledge but not much cruising-in-foreign-locales knowledge.

Better to go with a lightweight RIB and a smaller motor? Or get the dinghy that will open more opportunities while at anchor? Any advice / opinions welcomed. Thanks in advance!