I started with a vertical propane smoker, but didn't use it much. On a recommendation I got a Green Mountain Grill Daniel Boone pellet smoker and use it all the time. If money is less of a worry, Rec Tec or Yoder are usually considered the best pellet smokers out there.
My favorites are Smoked Chuck Roast (salt and rest in fridge over night, rub with pepper and garlic powder, in the smoker at 225 until internal meat temp of 197, wrap and rest for an hour, easier, cheaper and just as tasty as brisket), Tri-tip steak (smoke until 130 internal meat temp, rest then throw on super hot grill or cast iron for some crust) and chicken wings (rub with favorite rub, smoker at 410, 20 minutes, flip and cook 10 minutes, flip and cook 5 minutes, nice and crispy).
A good resource including many reviews, recipes and techniques is
https://amazingribs.com/