I mostly buy new from Acoustic Sounds and Music Direct. I try to stick to AAA pressings or MoFi (DSD on vinyl high quality stuff). I buy used originals on ebay.
I try not to buy albums that were originally recorded as digital. I can listen to this music on Qobuz or Tidal. There are some exceptions but I generally stick to this rule.
One interesting recording company is Newvelle Records.
https://www.newvelle-records.com/collections/shop-newvelle
Their clear vinyl are all really good quality analog recordings.

