Farmer Connie
Almost Self-Reliant
That is a loaded question to which you will not find a simple answer. Depends on what you're looking for in your meat and what's around you for breeds, and a whole bunch of other things. Do you care if they're heritage breeds?
I am personally pretty impressed with Duroc/Old Spot crosses. But I've heard Large Blacks are fantastic, and Berkshires are supposedly great. Just stay away from Yorkshires and mass produced hogs, they'll have low fat and not do well on the homestead.