I think the problem with ALL new arrangers is that they are constantly trying to reinvent the wheel with new styles. Dancers want a beat they can follow, and not be distracted, or confused as they dance. Cha Chas, Jitterbugs, Disco ... whatever your flavor - these betas all exist in a predetermined form, and changing them up each year to make a new arranger sound "fresh" just makes it harder to use. Ketron is one of the companies that actually offers a more basic, traditional arrangement in their drum beats, and I wish more manufacturers would follow suit. Roland does, as well. I agree with Mark, that Yamaha is more sterile, and Korg is too busy (at times), but in general - I think ALL the brands have tried too hard to "improve" the beats that have already been proven. I reiterate my affection for the EASY EIGHT that Roland put out, some 30 years ago ... the most versatile dance arsenal on any arranger to this day. Every time I get a new instrument, I tweak the styles to include my Easy 8 patterns, and I'm off to work! I learn the rest as I go along. There are very few songs I cannot cover using just 8 simple drum beats. The rest comes from my heart, and my hands.