Re: CD cheap Vinyl expensive.
I had heavy vinyl of many classic rock and classical pieces. The 1812 overture was too much for my tonearm/needle. It would jump during the finale.
I like heavy vinyl... as to half-speed... I am not sure if it's that or just the recording technique/quality that sets it apart.
I picked up my last vinyl from mobile fidelity, telarc, (IIRC Sheffield labs) from a store called "Ameobas" in California.
I think classrooms should demonstrate Pink Floyd's DSOTM on quality vinyl vs the cd. That illustrates a difference that will raise hair on your arms.
There is one online source in the USA for vinyl and LP supplies, it's in a credit card commercial as well. (I forgot the name)