I already had my realistic record cleaning bushes and ancient solutions, but I am going to buy some new cleaners. Have yet to decide what and where yet. Still researching.
I think it is now an opportune time to review record care. The place to start is the careful research done by the late Cecil E. Watts back in the 1950s and sixties. his work still remains the most reliable advice available.
Your description of your discs show that most who have bought and owned vinyl discs are morons.
I have a large vinyl collection going back to the 1950s and they play fine. I generally stay away from other peoples used offerings un less they can give cast iron proof of proper care.
These are the basic rules.
Never touch the playing surface.
When playing a disc remove it from the jacket and play it right away. After play is finished return it to the sleeve right away. Store discs upright and perfectly vertical.
Insert the sleeve so that the sleeve opening is at 90 degrees with respect to the sleeve opening.
DO NOT clean the disc with any liquid products unless you have a powerful vacuum cleaning machine like the Keith Monks. These are super expensive.
The reason is that liquids force dirt to the base of the groove where they cause most noise and disturbance.
So use dry cleaning with a good record brush. Do not brush across the grooves.
The best record cleaning device is the Cecil E. Watts Dust Bug. These were carefully designed using his research using electron microscopy. Do not use the cleaning fluid.
These Dust Bugs do come up on eBay from time to time, and you should snap one up.
I have lots of spare bristles and red pads.
I have discs spanning 70 years since I was seven years old and they are in good condition.
If your discs get noisy then your care is incorrect. LPs with proper care are very durable and will play fine for a lifetime.