i have ezd1, and superior 2
 
i prefer the routing options i have with SD2, i want complete control over all my tracks.
 
that said, i like the search and tap function in EZd2,
but don't want to upgrade only for that.
 
if i knew they were going to add that function to SD2, that's what i would prefer.
 
but i cannot find ANY info on future upgrade, so i will have to sit it out.
 

If there would have been a REALLY good sale on SD2 over Black Friday/ Cyber Monday, I would have jumped on it.  I have been wanting to get SD2 for a while.  
 
That being said, I have pretty much stopped using the other 3 drum midi software packages I have and for the last year, using EZD2 exclusively.  I really like the work flow of EZD2 and the tap to find.  I find the drum tones completely adequate for the Projects I work on.  In-fact, I often prefer the DW drums or ROCK! to most every other drum set I own.  The only reason I would like to move up to SD2, is for the additional flexibility of having complete control.