I've listened to metalheads and moving shadow. If you like someone with gold teeth and a huge ego, that's doesn't write their own music. Go down this route. I'd by anything on sour, but then I actually listen to vinyl in record shops. It is the best way to find something that aren't hot off the press. Find a bunch of labels you like, search in the crates that no-one whats, and hog the deck.
Vinyl are so cool that you can go through 100 tracks in no time. If it doesn't sound good or immediate. All the record shops care about is if you buy one or two.
Listen quick to the pile of records, anything good put it into separate pile, try not to get lost; it has to be amazing to you and your audience.
Then listen again to the few records that are useful.
The main point is; have no discretion. The worst thing is going home with a pile of vinyl that sounded good in the shop and sucks when you'r at home.