Bimmer,
hands down in my opinion is bull shoals. head down to forsyth and and fish swan creek up to the tanny darn. great spots to catch fish, lots of state records have come out of that stretch of water and its a nice shore fishing area. From springfield it is about a 40 minute drive if that. good luck. i have also caught some really nice fish out of springfield lake, i don't fish the warm water oulet very much. If you go down the park road you can fish by the canoes and over along the bluff some. i have a 10ft john boat that i take out there some and you can really catch some nice topwater bass out there. there is also a decent crappie population in springfield lake that nobody really ever targets that i know of, well i guess till now. ha ha. a bad day on the lake is better than a good day at work though.
good luck