I would opt for a Weber smokey Mountain...$200 or under and very good quality and exceptional fire control and burn times. It is charcoal based with wood chunks for flavor.
If you are going to look at a offset, you are better off spending your money on a good one...Gator or Klose. The Brinkmanns at Home Depot ar crap in my honest opinion...very thin. They might start in the $600 or more depending on the options. These would be more of a "stick burner" smoker vs. charcoal.
Do you have a budget to start with? Perhaps a call to Klose or Gator is in order. You couls PM Ritch from Gator as he is a member here under "GatorPit"
Hope that helps initally...