I've listened to a few of Can's major albums, and Soon Over... is for me the most consistently enjoyable listen. Whereas other Can albums are too sprawling/eclectic (Ege Bamyasi), too short (Future Days) or just too plain weird (Tago Mago), Soon Over strikes the right balance between accessibility and experimentation. The fact that Damo Suzuki has left makes little difference- his departure was hardly like Syd Barrett leaving the Floyd, and anyway, Can's music is primarily instumental, so it's easy enough to work around Damo's absence.
The album has a fairly jazzy and ethereal sound compared with the more strident rythms of Ege Bamyasi. It has the mellow feel of Future Days, but with more stylistic variety and musical colour. The opener, Dizzy Dizzy has a lovely stuttery vocal which is mimicked by Leibzeit's rhythm, while it showcases Karoli's violin playing. Come Sta, La Luna is like a slow tango, with some film samples and some nice guitar playing from Karoli. Splash continues the Latin feel with its percussion, but is offset with a squalling violin, before half-way through, the track mellows out slightly, where some nice 70s synth washes come in accompanied by Karoli's guitar playing, like a jazzier Pink Floyd. Chain Reaction is a very odd, but brilliant, funk/disco marathon. Its disco, but not as we know it, that is, filtered through Can's peculiarly idiosyncratic sensibility. Propelled by an insistent 4/4 rhythm, before slowing down a couple of times to a funky strut, the track closes with some frazzled freak-out guitar and percussion. The closer, Quantum Physics, is an ambient track which rounds things off fairly well.
Overall, I don't feel that Can's albums always quite hit the heights that they ought to (mainly, I think, because they're too short, and leave the listener feeling short-changed). But nonetheless, Soon Over... is the Can album I'd recommend.