I'm not trying to knock any of the other guys out there, because everyone mentioned is extremely talented, but in my opinion, no current arranger out there does it like Jay Bocook. Listen to his shows...especially recently...there will be at least 4 crazy lines going on at once but they all make sense with each other. And the way Tom Aungst writes...you hear the horn parts in the drum parts. Add in Neil and they've got quite the package.