How do I choose a phono preamp?

To begin with, it would be sufficient to buy a phono stage with a mono mode switch, rather her than two tonearms and two cartridges .  Makes sense also to look at the BAT lineup of phono stages. Balanced types would mate well with what you’ve got. Congrats on the CLS Is. Great speakers.

For 15k I'd suggest:

VPI Table

Koetsu Black Goldline (or even Urushi)

Sutherland Duo

I know this works as this was my setup for many years.

I have since upgraded the cartridge to the Rosewood Signature and the Phono Amp to the (outstanding) Dos Locos, and am thinking of upgrading the table, but the sound of the initial choices was rather good.

Just buy the Allnic phono stage that fits your budget and forget about it. Enjoy the music

I have many albums that I purchased back in the 80s that listened to once.  I had a Nakamichi RX-202 back then and would record the albums on the first play and set them aside.  Over the past two years, I’ve also purchased many albums from Acoustic Sounds that are still sealed.  

@lewm - yes, the CLS-1 is great.  Have had them for over 30 years and keeping them forever.  

Given the comments/questions above. I can see that there is still much I need to understand.  I’m not one to buy buy a "rookie" setup and then move up.  I prefer to just get the end game setup and be done with it.  

I’ve looked at VPI and Dr. Fiekert because I have dealers near me. . .I want the setup to be simple.  Streaming had made me lazy, but I still romanticize about vinyl (it’s kinda like wanting a stick shift even though automatic transmission is available).  Not sure that I want to fiddle with two tonearms--I don’t know why I feel that way, but I’m open to suggestion.  

How do I select a cartridge? Is there something I can read to learn all of this stuff? 

where do you live?

If buying a used TT, close enough to listen to/avoid shipping risk/cost pick up would be a great advantage