I sure had a hard time finding useful information on sightseeing in Savannah. I have just returned and this is what I learned.
1. All the trolley tours basically cover the same route with more or less the same narration. Most of the trolleys go to the visitor center so you can look them over, talk to the guide, check the price and make your choice then and there.
2. The haunted pub tour is more about drinking than ghosts. If you want to go to some cool pubs and have an excuse to refill your beer cup every 30 minutes, this is the tour for you. If you want a good ghost story, try another tour.
3. Architectural tour was outstanding-see my review elsewhere.
Two things that I didn't get to do, but are on my list for next time...
High Tea at the Gryphon (4-6pm)
Get a picnic lunch at Parkers (??) on Drayton, north of liberty and sit in a shady square and people watch and eat.
Can't wait to go back.