I fly there regularly (learned to fly there, in fact) I've used both Atlantic (south of the main terminal, east side of the field) and Signature (northeast corner). Have found Atlantic's service to be a bit better, which is to say they'll meet you with a golf cart, get you tied down and give you a ride to their facility. At Signature I've always been on my own. Fuel prices at both are the same, which is to say outrageous. As are SBA's overnight fees. Sure is convenient though. I fly to visit family so no experience with ground transportation, but Uber serves the area and is an option.
In the unlikely event you get coastal fog in January, don't forget that a special VFR departure can be an option. I've sat on the ground there many times, with a 1200 foot ceiling and the mountains clearly visible with blue sky just to the north and behind them, waiting for it to burn off. Then one day the light came on and I asked for special VFR. Controllers can't offer it, but if you ask they are most helpful.
