Elliot, Basically this thread consists of you naming products you saw on the internet after suggestions were made by Chakster and others, with not much comment about whether you really want to buy it or can afford it or fit it into your system. That is what I meant when I wrote, "Is this a question?" My post came right after you posted a URL for a Jeff Rowland phono stage that your friend was going to give to you on longterm loan. If that happened, what more do you need? If you were to take possession of the Rowland, you would not be needing any SUT OR a pre-preamp. So what is all this about? "Channel separation" and "channel balance" are not a way to judge whether you will like the sound of a stereo cartridge. And my general advice to you is not to buy a "vintage" phono cartridge, because aging, even in the box, does affect cartridge suspensions. Chakster is a very experienced collector; he knows what he is doing and can get away with buying old cartridges. I've done it too. But I have also been "stiffed" once or twice. I don't think you want to start out with a major disappointment.
My opinion is that HOMC cartridges are usually inferior to LOMC cartridges, MM cartridges, and MI cartridges. HOMC is at the bottom of my totem pole. But that is merely my opinion. You need a phono stage, preferably one that has both MC (high gain) and MM (low gain) phono inputs, so you can play around with cartridges of different types until you find out what you like in your system. Or of course you can use an MM stage plus or minus a SUT, to the same end.