My favorite lure to fish honestly. A true big fish bait that can be cast extremely accurately and can be dragged through some snaggier cover than you'd think. I use them anywhere there's bass, brown or green fish. River smallmouth love them. Ive even caught a 27" largemouth off a bed on one.
I don't have a brand preference, I've used almost all of the major brands and will occasionally get one that won't "keel" evenly, but most work just fine, even the generic $3 models as long as it has a good hook. I do prefer the single propeller over the double prop models and the inline "snagless sally" types. One other thing I've noticed is after a few BIG fish, a lot of buzzers get out of tune and just won't run right. There are plenty of ways to attempt to tweak and retune them, but I've had so so results as a whole. I had high hopes at one point for the terminator titanium wire buzzers, but couldn't get one to keel straight up and down, a pet peeve.
Some feel an ultra slow model is best, I don't fully subscribe to that. Perhaps when the fish has a tight window of opportunity to react...perhaps. But I typically don't want a fish to get a good look at my buzzer. Believe me, a bass can cover ground VERY, VERY quickly. One of the coolest things I've ever seen was an 8lbr emerge from under a 10' clump of algae in open water and chase down my buzz bait from nearly 40' away.
Season? For me, its usually late prespawn thru mid fall. Color? I like black most of the time. If I'm around shad the strike king perfect skirt in white w/the blood red belly strip is also a favorite. I've experimented and am fully convinced a river smallmouth doesn't care one bit about color...Ive caught them without a skirt!
Any other questions feel free to ask.