It is truly a personal choice. Some people love basic style card, while other absolutely love cloze deletion style. Go to r/MCATANKI and read up on the various premade decks available. A few suggestions:
JackSparrow (He got a 527 after spending 300+ hours on his deck--Kaplan based.) (Basic Style.)
Coffin aka PremedUNR (Combined JackSparrow C/P, B/BC) and Bouras (P/S.) (Both (Cloze Deletion Style and Basics style.)
BioBenoni (This is a Berkeley Review Deck for G. Chemistry, O. Chemistry and Physics.) [He used JackSparrow B/BC and P/s]
Ortho528 (He scored 526 on the MCAT using his deck.) (This is an all-in-one deck--4600 Cards.)
Bouras
MileDown (Cloze Deletion style)
MCAT For Victory (Cloze Deletion Style)
MrPankow (Psychology/Sociology Deck) (Cloze Deletion Style)
BluePrint (NextStep) Now has a 1600 card free deck also.
There are many others, but those should be solid.
Best of luck.