Abacos is more protected especially from a west
wind event and more populated than the Wxumas. The
Exumas is more "wild" and more about the
water and beachs. I don't even know where you would start a
charter at for the Eumas. But the problem is you are on a schedule and have to get back to the starting location.
So if you just want to sail it doesn't matter. If you want short
sails to a new protected spot each day where you can get back to turn in the
boat then start at Marsh Harbor.
But I type this from Marsh Harbor having not been off the
boat in 48 hours as the
wind blows 30+