I love Who Knew and Synesthesia. I actually quite like Ether too, to me it sounds a little like an AOD song written during the DU sessions with DU era vocals, lyrics, and production. I kind of feel like DU in its entirety was originally meant to sound like Ether. I've never read anything about this for certain, but I believe it must have been an early cut. The structure is quite similar to a lot of songs they wrote around the time of AOD, and it especially is really similar to the structure of Reivers Music (and the transition between the second verse and second chorus in Reivers Music and the transition between the first chorus and second verse of Ether are almost identical). It's a fun song.
This band always had excellent B-sides. The B-sides are as good if not better than some of the stuff they put on the albums. I have a ton of favorites. I love Who Said You Could Touch Me?*. Story of my fucking life right there lol. I love Lower It, the bass line is totally sick. Now the World, Rabbits are Roadkill, The View From Here...I really enjoy their cover of Don't Change, I find it very soothing. And of course, A Winter's Tale. If I had a definite favorite, that'd probably be it. I can listen to it on a loop for like an hour, never gets boring.
*Edit - so I just searched for the earlier versions of Who Said You Could Touch Me? from Eddie Picnic's All Wet because I'd never heard it before and proceeded to die laughing. Now I know the real reason Geoff quit the band.