With dirty records Ultrasonic cleaning is the best. I would still add like 1% ethanol or 2% isopropyl alcohol to the distilled water. You will get rid of the oil based deposits like finger prints better.
Having said this there is no type of cleaning that will make a new record sound better and as long as you never let it collect static and get dirty you will never have to clean it. I have never bought a used record. I think it is a crap shoot. I would if I got the chance and the price was right buy a large collection, say over 2000 records from an estate sale then sell off the records I do not like. One owner can not listen enough to one record to wear it out with a collection that size. Small collectors will buy a new hit record and play it over and over until they get bored with it or the next hit record comes along. With standard record hygiene they wind up building a collection of damaged records. These are the ones you have to avoid.
Having said this there is no type of cleaning that will make a new record sound better and as long as you never let it collect static and get dirty you will never have to clean it. I have never bought a used record. I think it is a crap shoot. I would if I got the chance and the price was right buy a large collection, say over 2000 records from an estate sale then sell off the records I do not like. One owner can not listen enough to one record to wear it out with a collection that size. Small collectors will buy a new hit record and play it over and over until they get bored with it or the next hit record comes along. With standard record hygiene they wind up building a collection of damaged records. These are the ones you have to avoid.