OK, from your story, there is one thing that is certain. The problem was unlikely to be with the turntables you bought. Both are outstanding. So, I would look at your phonostage.
My rule of thumb is that each component should be carefully chosen and generally of equal investment… so Turntable = Phono stage = preamp = amp. Then what @theflattire said sounds reasonable… 1/3 each. But given your previous experience, I definitely do not think you should be considering choosing pieces. You should get a pre configured table like a Linn LP12 Majik, or VPI. VPI offers cartridges, you talk to them about the sound characteristics you seek and they will recommend the cartridge. I am not a big Rega fan… but also a good choice.
So, do you want to put out $10K? Or invest the $10K in getting better sound from your digital end?
I have equivalent sound quality from both my analog end and digital end. But, I am an old fart who has been collecting records since the late 1960’s. If you are drawn to it.. go for it.