I'm a newbie too... just got started with my new smoker last weekend. I'm pretty happy with my propane smoker, and if you want to see it, ceck out my posts from that cook here: http://www.smokingmeatforums.com/t/176485/planning-first-smoke-three-questions-please/40#post_1306134
This smoker was purchased from Sams Club for under $300.
Two distinct features that I liked about it, and that made me as for that particular model: (1) it has a separate door for the meat and wood-chip areas, so you can add wood chips without opening the main door and thus loosing all of your heat and smoke. (2) it has two burners which should allow for better temp control.
I decided to add a needle valve to it because I was able to get my temps down in the 220-260 range by using only one of the two burners, I wanted to be able to get the temps even lower so that I could burn both at the same time to get even more smoke. I haven't tried it yet with the needle valve...
Anyway, I think it's a pretty good smoker. It's much better than my last LP smoker.