Personally, I think the presentation was excellent because it was not clouded by subjective preferences of the sounds. Instead, it assumed both has good sounds and styles, and, instead, concentrated on the differences in tools and navigation. I wouldn't use a sampler e,g, if the SD90 had one, but some would. OTOH, I consider editing capability more important, hence the SD90 wins. In the end, since I have a Pa4x, I have a complete gigging machine, like the author said.