Since you are asking for Synth mainly,
Check out the ' Broken Spindles' by Broken Spindles- The first electronic album from ' the Faint'. Very Kraftwerky, synth and bells, if you like synth the last track on this album will take your breath away. LPs available, i think.
Another must for the Kraftwerk fan is the albums from 'Kraftwelt'- Deranged in space and Retroish. Oh man you will love these. Not sure about LPs
Of course work from Depeche mode. 'synthesizer hits' compilation is what I turn to to get 80's synth sound- many hits- like miami vice theme and many more
Check out 'www.discogs.com' for anything electronic- you will find rare LPs there- at a price $$
On other note , my new find lately is the Dub steps category: Pole, Deepchord, Benga. And for taste of meditation/beautiful dub, try the 'dub tractor' - music and moniker so cooool.
