- Picture discs and lathe cuts (both objectively sound terrible, and serve no purpose other than as an object d'art to hang on your wall). Kind of a bummer to have to re-purchase an album just to get a decent-sounding copy.
- Taking the same master used to create the CD, making little or no changes, not altering the track order for density, and then just slapping it onto vinyl. Lost count of how many records I purchased that clearly sound worse than the CD because of this.
- For older albums: Not breaking out the original master tapes for a remaster. Unless they specifically state otherwise, you can bet your arse they just used the CD.