Virtually every product manufacturer wants to have a "thing" that separates their product from others. Half-speed cutting, 45 rpm, single-sided discs, direct-metal mastering. The fact is, IMO, no single attribute has ever been shown to produce a consistently better-sounding product. The quality of a record starts with the quality of the master tape, the lathe, the skill and care of the people involved, the demand for perfection... Sometimes the reissues are great, sometimes the old-fashioned older pressings are better. Unfortunately, it's often plain old trial and error to find the best pressing.