I think I've figured out why everybody (including me) likes Don's work.  Everybody (including maybe Don) is going to hate me (nothing new there 

 ) for saying this but; none of Don's stuff sounds like it's an arranger backing.  It's probably the most authentic-sounding accompaniment heard on this board.  Two other things; 1. 'licks', including solos, that do such a great job of emulating both tone and playing technique (especially guitar), and 2. timing.  This is SO, SO important and it's mostly a 'feel' thing.  Arrangers are very precise and to keep them from sounding 'robotic' (as Donny says), YOU have to supply the syncopation or little variations in tempo/timing that makes it sound LIVE.  BTW, this also applies to playing to drum machines, although some have what's called a 'swing' setting which artificially does the same thing, just not as well.  Here's a clue though, if you don't 'feel' it, don't do it.  Nothing sounds worse than faked/forced syncopation.  Anyhow, that's a really long-winded and roundabout way of saying I really liked it (as I do with most all of Don's work, and I am not even a big Country fan - except Willie, of course 

 ).  I think for me, it's because it sounds so 'professional' and I like all kinds of music IF IT'S DONE WELL.
Nice job Don, and I rarely say that unless I mean it.
chas