Out of deference to your opinions, I gave
Würm another listen*, but it still didn't do it for me, I'm afraid. I feel like the introductory section goes on too long and then, when it finally comes in, the guitar solo doesn't quite give the explosive lift I'd like to hear. It's like that time when you're a kid, intently watching a firework that turns out to be a dud.
Sorry, guys.
* in fact two listens: a live Yessongs one and The Yes Album one. It may be my impaired hearing or my cheap laptop loudspeakers, but I didn't really notice much syn soloing on either version.