Well it's a Yamaha WX5.
I'm just not sure what you mean by 5.7/11.
It's easy enough to check though if you really want me to.

Dislikes...hmmm
No real turn-offs.
Just MIDi related stuff. Especially with the VL70-m. When I'm using the serial connector (VL70m built in midi interface) it's OK.
However if I connect it to the Studio 5 - that's when I get occasional overloads.

Likes...
I played a clarinet and later a sax (when I was a kid). I really dig the fact that I can control a synth with something either then a guitar (I use a Roland GR33 to triger the VL as well) or a keyboard.

-ED-