I've had no luck with cooking their briskets, but I think that is me, not them.
Yesterday for football, I slow smoked 2 huge racks of Pork Spareribs. For some reason my Walmart marks these down from their normal $2.49lb to $1.74lb at some point. I haven't figured out the system yet. But every time I go into Walmart I check and if they have them (always just some of them) marked down, I grab them. I use simple rubs (yesterday I used the Weber T-bone rub) and they are always fantastic. I usually smoke 4 hours, but went 5 yesterday. Just awesomeness!
Also had good luck with their Butts and other porks.
Only thing I haven't cooked well is their brisket, but again, think it is me, not them.