If you didn't know, Mako is really a Kenner.
If it's the liner hull, it's a no brainer, take that. If it's the rolled edge hull, meh...maybe.
Nothing '99 vintage OMC would be a desired motor.
I've never been particularly impressed by baymaster build, and it's almost ten years older.
If those were my only choices, get the kenner/mako.
Marble Falls/Seadrift TX