Years ago I had a chance to listen to the A900 and the W100 at Head-fi meetings, one of which NotoriousBIG_PJ hosted. (Thanks again!) I liked the comfort level and general pleasant sound with vocals, but there was something about their upper-mid-range that made them much more coloured than other headphones that were present. Aerius also pointed out that violins just sounded different on those ATs and I fully agreed . On the other hand I think that colouration made them more pleasing with many of the pop vocals to my ears.
And last year I finally got to hear the W5000, and a number of other models. While it was a very nice headphone, it instantly made me remember the old experience with the W100 and the A900. The tonality just didn't do it for me and I expected a bit more for the price, even in terms of build quality. I think it's a case my preference differed from the characteristics of a brand line. I would love to have them just for their ergonomics.