It's really good ! I had the waza airs and I'm not noticing any difference in sound qaulity (using good headphones). I hated the drift on the waza airs so always disabled ithe spatial thingy anyway. Well worth the money IMHO.
I've just snagged a used green one for £500 on ebay from a local seller I've bought off before. His basses are usually set up with the lowest action of any I've ever played so dying to get my hands on it tonight.
Think I'd rather give half of that kind of money to ACG , Shuker or Alpher and have an absolute masterpiece made to my own specification. I guess a lot of the appeal of a Wal is to be seen to be playing one
Played it through headphones for hours last night and I love it. The sound quality is fabulous and the presets are very usable and sensible - barely any widdly noise filler patches. So intuitive to use - having watched a few youtube vids was enough to show me how to do the things I needed so I didn't look at the manual. It looks amazing too.
Good call everybody above !