RCM recommendations

Yes, we used the AI 4 step method that has been well documented here. Used that same brushes also. Since my collection is decidedly vintage, I think the PRC4 is the best fit for me.

Sbrown,
I'm sorry but I'm a bit skeptical, to say the least, about your experiment. The actual cleaning is done by hand, not the 16.5. Considering how strong the vacuum is on the VPI machine, I seriously doubt it leaves residue that would progressively degrade the sound of the records cleaned with it. Perhaps you need to perfect your cleaning technique or use different brushes. I also seriously question paying well over $2000 for a cleaning machine for an individual use unless you're very rich. I've used the VPI machine and it's a fantastic performer for the price.

Actusreus,you are free to be skeptical. Run the test your self and make your own conclusions. I ran the test because I wanted to know for myself first hand. Now I do to my statisfaction and I have passed on what I've learned. IMO, it's equivelent to a component upgrade.

Is 2k alot for a RCM? Depends on how much time and money you have sunk into building your collection. Just starting out, probably not. For those with a large collection, it's worth it.

Probably the best RCM was or is the Keith Monks RCM. Library of Congress had four of them at one time. Not sure if they are still around or not. Do remember they were very expensive and big and heavy. Most likely not for home use.

Sbrown,
Would I like a $2500 RCM better than a $600 RCM? I certainly would and should. I know I would also like a $300 stylus gauge that tells me the VTF to five decimal points better than a $70 one that only tells me only three decimal points (God forbid I used the Shure!). However, just as I don't think you need to get the VTF correct to the fifth decimal point to get fantastic sound out of your vinyl I also don't believe a $2500 RCM is necessary to get a record clean enough to have a superb sound as opposed to a $600 RCM. In fact, a lot of vinyl lovers don't even own a RCM and it doesn't stop them from enjoying their collections.

I think it's doing the OP a disservice to be putting down a $650 RCM (pricier than some of the decent tt/cart combos for beginners available on the market) when he's been cleaning his record without a vacuum pump at all.

I have no doubt your RCM is great.