I guess I'm in the minority. I think sweet baby rays is overrated. Way too sweet. I don't use a lot of BBQ sauce, but tried Stubbs original thisast weekend and thought it was decent/good.
I'm with you, Sweet Baby Rays is garbage AFAIC, but to each their own. I bought a bottle of Stubbs once and didn't care for it either. After trying both of those brands which seem to get some love among actual BBQ people, and not enjoying either, I pretty much stick only to sauces I make.
Any good sauce is a balance of sweet/spicy/acid, plus whatever accent flavors you want to add. So really they are super easy and you can change up what to use for the different flavor profiles.
I rarely follow recipes closely, but I do make a very close version to Mike Mills' Apple City sauce. It's great on ribs, and many love it on pulled pork.
My wife & I are hardcore Eastern NC style sauce fiends for pulled pork. I always mix the pulled pork with that vinegar sauce after pulling. In the past I've added a lot of flavors, but honestly I think the more traditional vinegar+Salt+Pepper flakes is probably the best combo, just to add some acid/spice with the pork.
I do occasionally like a SC style mustard sauce with pulled pork. Not all the time, but it's good when I feel like it. Again, I just follow a basic path with yellow mustard, vinegar, honey, brown sugar, and cayenne/hot sauce.