Ok, I guess I'll start off
Obviously from my BIASED point of view, I think that the Technics boards have the best (and most variety of styles) for those classic pop & jazz swing standards (Misty, etc). I think that Technics excels in orchestra & big band (1940's) as well. I think that Solton EXCELS in Pop & Rock styles particularly because of it's superb LIVE sounding PUNCHY drums, dynamic bass sounds and realistic solo instruments. With the SD1 and it's new sounds (especially the new acoustic piano & upcoming jazz chord voicing recognition), it has furthered it's appeal to jazz enthusiasts as well. The VA7 appears (from the the songs of Dreamer & Sander) to be a VERY clean & realistic sounding board with excellent sounds/styles to meet most all musical genres but particularly Pop/Rock, Latin, Contemporary. The Yamaha 9000/9000pro seems well suited for all styles as well, though not as dynamic (punchy) sounding as the Solton or Roland line. I particularly remember the light latin breezy style I heard performed by Ronnie Foster at Winter Namm. It seems that the 9000/9000pro is well suited for new age pop, as well as Country (as demonstrated beautifully by DonM, our Country performer on the forum). The PA80 appears to have a lots of strength in the contempary pop genre as well.

My current keyboard is the KN5000. My FAV KN5000 instrument sound is the acoustic piano and least favorite are the sax/reeds & drums (for those styles that require a LOT drum KICK & punch). FAV KN5000 styles are med/uptempo swing & big band. Weakest styles (though still good) are rock & blues.

Ok, I now want to hear feedback & opinions from OTHERS regarding YOUR favorite arranger keyboard sounds/styles.