Turntable upgrade, tweaks, or stay put?

Some tweaks might help, but in the end you're right that your vinyl rig is weak compared to your digital setup.

I've found that to do vinyl as well as good digital requires a larger investment. My universal disc player retails for $6K and it's quite good. OTOH, my TT, tonearm, cartridge and phono stage would retail for a combined $25K+. Now they're well beyond "quite good", but even to match the $6K digital player would probably cost at least twice as much.

Should you do that or buy more LPs? Only you can decide that. If there's music on LP you're dying to hear, buy it. OTOH, if you really wouldn't enjoy it on your present rig, upgrade that and add LPs as you can. It's a personal decision no one but you can make. :-)

Thanks for the responses. I don't know that I feel there is anything missing. Maybe blacker backgrounds and a bit more resolution. The musicality of the table is very good. The phono stage is built into the KW. I love vinyl but also listen to digital. I love my digital front end. I would feel ok spending 5-6k, but more than that seems too much to me for now.

I also have the possibility of using my father's VPI scoutmaster as a replacement. How would it compare with the MMF-7?

Look for a used vpi classic table. The vpi will be a good leap ahead of the mmf-7. And you have enough cash left over for more vinyl. That's a no brainer good luck.

I had an MM7 and once I changed out the stock Goldring for a Lyra Delos, this TT came alive. The MM7 is good enough that it will respond to and take advantage of an upgrade of cartridge. Recently, I bought an Ortofon 2M Black MM cart and this is a stunner for much less $ than the Lyra. I'm simply saying that I would not be too quick to judge that it is the MM7 that is the limiting element; it is a solid and very quiet table.