Yeah, this is a GREAT source of info.
What kind is like asking what kind of rifle to buy. We all have our preferences. IMHO, charcoal/wood is the best way to go, but it involves a bit of work. I happen to love the "work".
You can also go propane, where you actually smoke with wood chips instead of burning big chunks of wood. I have one of these, it works great and I use it the most because it's convenient. Mine is a Kingfisher Kountry Kookers model. It was $600 or so about 15 years ago and has worked great every time.
Electric? Please....I can't imagine using one, but maybe they work well. Just doesn't seen right to BBQ with electric though IMHO.
My brother uses a cheapo Home Depot wood burning smoker (maybe $120) and seems to make some great BBQ. That might be a way to go to see if you're into it.