I would personally prefer to hear a new album, but would love a riverun too!
It's the albums that got me into Underworld in the first place and I think the pressure to make an album great brings out the best. Also any tracks that don't make the cut or fit in with the album can still be used on a riverun.
The great thing about this debate is that we are going to get some new Underworld music soon anyway so I am very pleased!
www.myspace.com/easydelicmusic