Masterbuilt electric was my first smoker. My wife bought it for me and I love her. I made some tasty food inside that thing. However, sadly it sits idle since I built my UDS and also picked up a vintage Kamado on CL. I always rub my briskets and Tri-tip with just kosher salt, black pepper and a little granulated garlic. In my opinion that is the only thing you need on a good cut of beef. I would add that Pecan wood for both the tri-tip and the brisket. I was raised in Arizona so it took me awhile to resist using Mesquite on everything I cooked.
Enjoy the smoker and start planning your UDS build.