Yes, I didn't realize the difference between As & Ws until two years ago after I bought my Fantom X8. I naively thought that, since it looks like a NASA control module it could do everything including auto-accomapniments. On my website there are two songs, "Human" and "Unchained Melody" where I have nice auto-arrangements. The first one uses factory presets on the Fantom (unfortunately there's a very small number to choose from that are linked to the rhythm pads). The second one uses a Yamaha QY100 to provide the auto-arrangement (unfortunately I find it awkward and inconvenient to program for new styles). Samples of what I've done are here:
www.youtube.com/Halunlimited
I am now expanding in the direction of more new age, ambient, and ethereal electronic music (ie using soft pad and arpeggiated patterns- some from my four Fantom SRX expansion board sounds). I never got the hang of making new accompaniment rhythms with the Fantom, that's why I've been thinking of the TY, pa3x (but no longer the pa), the Motif and Kronos. I considered the Roland BK7 but that would probably be similar to my QY100 in inconvenience. I don't really want to keep two keyboards, and thus would sell my Fantom for one of the aforementioned. Thanks for taking the time to consider my situation.
Hal