I don't normally go to a Sonic, but once in awhile I do just for their Blasts. I just don't find that their burgers or chicken sandwiches to be that good for what you have to pay for them. I can get something way better (quality and quantity) from another place like In-N-Out for cheaper.
I've been to this location several times since I moved back and have had a pretty good experience. I'd done the drive-thru and Drive-In and both seem to be about the same as far as speed when it comes to getting your food. Drive-thru can get really busy though and at times it takes forever to get your order. However, the ladies working here are always very friendly and smile when they bring out your food.
My go-to order is usually a small Turtle Pecan blast with extra Pecans. Most locations just add a couple more pecan pieces, but this location actually gives you "extra" when you ask for it. The last time I ordered this though, their nuts were super stale and I had to pick out most of them as it just ruined the flavor of my blast..oh well..
Oh yeah, I can't forget how I absolutely LOVE their ice here. I'll go out of my way to go to a Sonic just for their ice.