Ahh nice town, been there and Tybee several times. Anyway, it's kinda a catch-22 here. I'm not sure how Jeff is "normally" on turnaround time but he is closer to you. Kevin (Herr Jugs) is out on the West coast but his specialty is his turnaround time. I've heard several stories of people getting complete engines back in 3 weeks or less, and of course the example I gave above was a top end in 10 days from shipping out to delivery. On the mere quality of work, I can't really say exactly who would be the better outcome but I have seen and experienced Kevin's work and it is amazingly nice, consistent, and clean. I'd shop around a bit though, FAST and Herr Jugs aren't the only ones around. You have Passion, Wildcard, CP Customs, etc... Just go through the site sponsor list and pick your poison.
I've heard some sketchy info on CP Customs before but don't know if it's true or not. I've seen some of their work too and rode a 421 with a set of ported jugs from them and it ran really hard. May wanna look into that one a little further before you go that route though. I'd hate to send my stuff to a dishonest builder. I really don't even know if they're still in business or not come to think of it.