I'd say to just experiment - try different ones and see what you like. I still make rubs but it's nice to have some commercial stuff around for when I either can't or don't want to. Check out Simply Marvelous, Plowboys & The Rub Company. I've also tried some of the Tasty Licks stuff from Fred's Music & Barbecue. I'm sure there's other good stuff, I just haven't tried them. For beef - I pretty much stick with sea salt and cracked black pepper, maybe a little garlic.
50" Klose BYC, 22.5 WSM, Backwoods Chubby, UDS, 26" & 22.5" Weber Kettles, Jumbo Joe, WGA, WSJ/MUDS, Jumbo Old Smokey, a piece of expanded metal I throw over the fire pit sometimes, Stealthy Black & Vol Orange
Displaced East Tennesseean
Proud recipient of a Tick
Former outlaw MOINK baller, now IMBAS Certified, but still lookin' over my shoulder.
"Relax, it's only BBQ.
" - Bigmista, 2013
Avatar by my son!