Pocket yachts

Please remove if this is not allowed
I’ve sold my center consul Prokat and ready to move up in size . I’m just not sure if a small pocket yacht is the right move . I like the 2860 Prokat Cuddy cabin but also like small pocket yachts ( 31 Bertram, 32 black fin , 29 Phoenix ) . Worried about maintenance between four stroke outboard‘s and inboard diesel (Yanmar , Cummins) . Is it going to be similar in fuel-efficient C and annual maintenance between the two ? So any help in that department would be very nice . Thanks in advance!!
Also if anyone knows the deal with 32 black fin in Pawleys Island or the 31 Bertram in bluffton for sale on pop yachts . I’d like to talk directly to owners . Not trying to take money out of a brokers pocket . Just prefer to talk directly with somebody and knows the maintenance of the boat for sale .