Marco - cool but not so cool to have....decent tho....good injury recovery
Blackbeard's one he got from that whiney bitch WB
Enel's - ofc
Luffy's - well duh. can take impacts.....imagine what xareers you could have. Also with gear 3 could be taller etc, so I can grow taller than kyok and troll people. No more bad falls.
Blueno's - can train in ma room, can sprint and never be late, make a home gym....basically like teleporting. Only thing is if you get hurt or die in there nobody will find you.
Aokiji's is cool (ofc) but wouldn't be as useful....well I suppose it would make me feel safer knowing I can freeze the sea, ocean and rivers to avoid drowning.
Jozou's diamond fruit would be okay.