Been smoking brisket for around 5 years, and I've used 3 different types of smokers.
Started with a Bradley very similar to this one:
http://www.homedepot.com/p/Bradley-...MItb207qDX1QIVULjACh2MpQayEAQYASABEgJoIvD_BwE
It was tough to fit a full brisket in there, but I was able to manage it. Everything else was quite easy to fit. For convenience, nothing really beats an electric smoker. This smoker uses wood pucks that move along a conveyor that places said pucks onto a heating element, and once the pucks are completely used, the system knows to move the used puck into the water bowl at the bottom, and thus replacing it with a new puck. It would maintain the temp like a dream. The only thing I would have to do was empty the water bowl filled with used pucks mid-smoke. Outside of that, I rarely touched the temp, or anything for that matter, during the smoke. The flavor was there, but it just wasn't spot-on enough, for me. Also, the clean-up was quite a pain. I'd have to soak the racks, drip pan, and water bowl, and then clean them after every smoke. It was tedious, and I eventually moved on to this:
https://www.bbqguys.com/weber/22-in...MI8quh5aHX1QIVBbnACh3dDQgaEAQYAyABEgIq6fD_BwE
This smoker uses charcoal, and you can throw wood chunks on said charcoal to add certain flavors to whatever you're smoking. This smoker really brought out the flavor, but the issue I had (maybe it was more user error than anything) dealt with maintaining a consistent temperature. I swear I'd dump nearly an entire bag of charcoal at the bottom, get the heat going, and I'd watch that temp drop on a consistent 15 minute basis. Therefore, I was constantly throwing more charcoal and wood in there to keep the heat up. The cleanup wasn't bad, though.
After mastering a number of different cuts, I decided to pony up for this:
http://www.acehardware.com/category/index.jsp?categoryId=111903906&f=Taxonomy/ACE/19541496&sr=1&origkw=big green egg&cid=PPC:G:Non-Brand_-_Big_Green_Egg_-_Exact&k_clickid=e310fc72-ddac-4f29-8b3e-181693229bba
I was skeptical that I was able to get everything I wanted out of a smoker given my previous pitfalls, but honestly, the Egg really does everything I need. The cleanup is basically emptying out the ash, wire-scrubbing the rack, and that's it. It maintains the temp just as good as the electric smoker, and the flavor is on-point with everything I've smoked. Once it's properly seasoned, everything tastes exquisite. Fair warning, if you go past the desired temp, it's quite difficult to get the temp down, since those ceramic insides hold a temp quite well. Yes, you're going to pay a pretty penny for it, but in my experience, it's worth it. I think my wife ended up paying around 1k for the large Egg, the nest, a set of platforms that attach to the side of the egg, and a couple other accessories around Christmas.
Since you're just starting out, I'd say go with something like the Bradley, and graduate to the Egg once you're ready. Good luck, maniac.