Anyone out there own a Clearaudio Double Matrix Pro Sonic?

The cleaning solution recipe that I use calls for 25% solution of isopropanol, not ethanol. As you know, ethanol is an alcohol with two methyl groups; isopropanol or propanol has three methyl groups ahead of the alcohol group. The capability of the two alcohols, ethanol vs propanol, as solvents may therefore be different. This question of isopropanol damaging vinyl is brought up over and over again, but I think it has been thoroughly debunked. ("Iso" simply denotes the arrangement of the 3 methyl groups with respect to each other, so isoprop and propanol differ from each other in secondary structure but are used interchangeably.) However, I am here to learn; can you provide documentation for your statement that "Any cleaning solution with alcohol will potentially melt the record"? In the context of momentary exposure to 25% propanol in the process of cleaning an LP, I doubt it. Distilled water, or any other kind of purified water, used alone is pretty much futile, if you want real deep cleaning. (In addition to propanol, I add about .05% Tween20 to my cleaning solution, to reduce the surface tension of water sufficiently to allow it penetrate into the grooves and to enhance its activity as a solvent.)

I've had my HW17 for at least 20 years with not a hiccup.  Bought extra wands and brushes for it years ago, but nothing is really worn out.  A lot of folks make an issue of noise.  That means nothing to me, because I keep mine in my basement workshop. When I'm cleaning LPs, I am not also trying to listen to music. The HW17 is quite noisy. If noise is an issue, and especially if you want to listen to music while cleaning LPs, look elsewhere.  The Loricraft is quiet, by comparison. US cleaners are usually quiet too.

My HW17 almost certainly predates the Clearaudio RCMs and is bidirectional too. You don’t need to buy the Cyclone for that feature.

I read the Clearaudio website on the Double Matrix. I too am enthused about the capacity to clean both sides of an LP at the same time. That IS a drawback of the HW17, the fact that in the process of cleaning the second side, you are forced to place the just cleaned side down on its cork platter. Whatever you decide, I recommend a distilled water rinse after the first vacuum. It gets rid of a residue of my cleaning solution that uses alcohol and a non-ionized detergent in water. So I clean, vacuum dry, wash with distilled water, vacuum dry again. I just use a squirt bottle to apply the water rinse. VPI now sell a higher end RCM that ranks above the HW17 in cost; I haven’t checked whether it too can clean both sides of an LP at the same time.

VPI HW17, for much less money.