Lost Kraftwerk

I’ve been on a Kraftwerk binge for the last few days and I’m toying with the idea of picking up the four early albums Tone Float, Kraftwerk 1 and 2 and Ralf and Florian, all of which are available only as unauthorized CD editions currently available thru Amazon’s 3rd parties. I’ve long held off picking up these CDs which are courtesy of the Italian bootleg label Crown, but at this point I don’t hold out much hope these album will ever surface as official issues - Kraftwerk Inc. has effectively airbrushed the albums from the official discography, the noisy improv-experimentation of the pre-Kraftwerk Tone Float and the duo of self-titled albums have more in common with the proto-Industrial textures of Cluster and Tangerine Dream’s debut Electronic Meditation than the clean spacious melodies of Man Machine and Computer World. But it’s a real shame Ralf and Florian, one of Kraftwerk’s very finest albums has been pushed aside, as it’s an essential stop-over on the road to Autobahn. Has anyone picked up these Crown CDs ? I’m aware that all four are needle-drops so apart from a bit of crackle, how do they sound ?