Having played nearly all the TOTL and MOTL arranger keyboards during the past year the only statement I could make about this is they're ALL very good. Much of this will depend upon how the keyboard and the PA is EQ'd, which is the case with any electronic instrument. The Ketron drum sounds seem a bit harsh or crisp in comparison to Yamaha, Korg and Roland. Much of this, however, is somewhat subjective, and more often than not it is style dependent. With some styles, you will want the drums a bit subdued, while with others, techno, rock, dance, etc.., you would probably want hotter drums. And, with some TOTL keyboards, you can assign certain features to independent outputs. Sorry if this sounds confusing, but like I said, this particular component is very subjective.
Good luck on your decision,
Gary
