I do a ton of smoking/BBQ and I use a Weber Smokey Mountain, its a charcoal smoker. I do have an Old Smokey electric that does an excellent job with fish. I did a little venny in the electric, and it was decent. Bradley is the Cadillac of the electric world, so I suspect you would have excellent results.

For your pulled beef, go with Chuck Roast, the sirloin tends to dry outa little by the time it gets pullable. I do pulled beef a lot, and chuck is the way to go.