I smoked on an ECB (El Cheapo Brinkman) for the better part of a decade.  Made some ****ed fine 'Q.  I'd say that I earned my reputation for briskets on an ECB, believe it or not.  I also constantly  
modified the bejesus out of it.  I had 2 of 'em, in fact, and would spray paint cows or chicken stencils on the sides after successful "missions"!  It really was that much of an ordeal; I truly earned those combat medals...
Overnight burns were essentially overnight campouts, spray bottle in hand, nursing the beast (and a 6-pack).  It's a labor-intensive wild ride--and your results 
WILL vary.
I'm a decade older and wiser now.  The 22.5 WSM is perfection.  Plug and play, really.  I now concentrate more on meat prep, sleep better (!), but have to find other excuses to down a 6-pack alone on the back deck in the middle of the night while swatting mosquitoes...    
 
Your call, brother.  Experience is a fine teacher!    
  
(Still have the ECB's collecting dust as trophy reminders of days gone by--a few friends have actually asked if they can have them!)