Well, I got one a few months ago. Have only skipped through the presets so far, and I was quite surprised! I use to HATE presets, just for being presets, but some of them on DX-100 are cool! Not that they will survive very long though... (I don't buy synths for presets, in case anyone wondered)
I'm not a FM guy, never got into it. I got the yummie deetox because it was cheap, small, FM and does strap-on... so go figure, it will take me some swearing to control it. (Some keys and buttons needs cleaning too).
But I like it like hell!!! From screwing with one preset...
It suits you well too I think, JS, with your affection for small, portable, specialized (some would say limited) gear!!!