Silence, (good handle, btw, I feel so commanding when I start the message this way)
I have an Airhead, and JMT-built CMOY w/ Meier crossfeed (or so I'm told
), and a Tangent-built Cmoy modified Linkwitz crossfeed (I could be getting the name wrong) (also, it's in a separate box, so maybe you should talk to Tangent about it). I've done a little bit of comparison between the them, though not as much to get a truly informed opinion. I'm also not so much of a crossfeed fan. That being said, I personally like the modded Linkwitz the best. I found it provides the crossfeed effect, but doesn't alter the sound as much as the others. However, I find them all acceptable. If you really want to know about one or the other, I can do some more listening -- let me know.
Yes, I think it could be really interesting to hear. I think Chu Moy has som interesting discussion on the quality of the Linkwitz crossfield in his description of the building of the crossfeed - but I know that their must be a lot of personal preferences in this.
I mostly listen to classical music when using headphones, and as far as I have understood this might be the music that might benefit most from the crossfeed.