I've eaten Bubba's on a few different occasions and it's always been solid. It's a bit out of the way for me (Sunset Blvd.), but when I'm in the area it's a classic stop for some tasty Carolina 'cue.
I think I kick up my 3.5 rating to 4.0 as the service has been just so kind. Bubba is one of the nicest restaurant owners I've ever met and the servers are truly salt of the Earth people. Plus, Bubba often donates product to a local charity for events, which makes this place aces in my book.
As for the food, you'll be in and out in no time as the food comes out in a flash. I typically order the petite plate as and I unfortunately enjoy the included hush puppies a bit too much. :) It's not the best 'cue I've had in Charlotte, but I do enjoy it quite a bit!
The digs are pretty basic and nondescript, but I'm usually there to grab a quick bite of 'cue and if I'm in the need of a major sugar rush - a sweet tea.