Turntable upgrade, tweaks, or stay put?

You say you have no compaints. So what do you feel is missing sound wise. I do not know how good the phono stage in your integrated is but a separate outboard phono stage might improve things. Yes you good buy a Pricier VPI or Clear audio turntable and upgrade the cartridge but you are correct that you will have to spend some serious money. Do you primarily listen to vinyl or are you basically a digital guy?
Alan

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.