The issue for me is, what do you like to do with the boat? If fishing, then St. A. If cruising for long weekends and vacations, then Jacksonville. The St. Johns river is a fantastic cruising ground all the way to Sanford. The area north of Jacksonville up through Georgia is a gunkholer's heaven, with lovely small towns like Fernandina, St. Mary's, Brunswick interspersed along the way. Fact is, there just isn't much to do with a cruising trawler style boat within a day or two of St.A If your objective is to get out to the Bahamas and or the Keys, then the further south from there the better, as in WAY furhter south. I should also note the St. A inlet can get a little squirrely; not as bad as many and very usable most of the time, but not a class A like the St. Johns or St. Mary's.
"There's the Right Way, the Wrong Way, and what some guy says he's gotten away with"