Turntable upgrade, tweaks, or stay put?


I have a music hall mmf-7, stock with goldring eroica and project speed box. Rest of system: Wilson audio Sophias, Musical fidelity KW 500, Musical fidelity Trivista DAC, and Musical fidelity CD player. I really enjoy the mmf7 and have no real complaints. However, I know it is the weakest link in my system. I wonder how much better it could be. Do you think I would have to spend $5-6000 or more on a new tt to get significantly better sound? Any recommendations? Or would some tweaks be smarter? Or just save my money and buy more records? Thanks in advance. As I said, I like my mmf7, but wonder if I am missing out by not having something of similar quality to the rest of my system.
arsh
If you keep the VPI or decide to find one of your own, they really like a solid platform to sit on. I thought my Scoutmaster was solidly supported on its own VPI 4" tube-steel and steel bar stand loaded up with 100# of lead shot and kitty litter. The stand, spikes and fill and components on the two shelves came to > 250#. The whole thing set up on brass spikes sounded very good, but did not really take off until I put a maple block isolation platform under it. I got a great deal on a Titanic maple cutting board from dawnsplatforms and some Mapleshade blocks. The 27"x21"x4" monster adds another 65# to the setup, and the sound went from excellent to glorious. It also looks fantastic.
Thanks for those comments. I have a couple of questions about the Zephyr: 1) how long does it take to break in; and, 2) do you have any suggestions on setting the arm height on the scoutmaster with the Zephyr?
Thanks in advance.
Arsh: you asked, "I have a couple of questions about the Zephyr:

1) how long does it take to break in ..."

Not long. Maybe 50+ hours.

"2) do you have any suggestions on setting the arm height on the scoutmaster with the Zephyr?"

Follow the instruction. I would set VTA so the arm is horizontal with the platter. Then adjust by ear. Set VTF within the recommended range. Harry Weisfeld does not believe in using anti-skating (AS). Peter does. Frankly, making adjustments to the JMW arm is a PITA. I use just a little AS and only to minimize uneven wear. Send the Zephyr to Peter for a check up after 1500 or so hours of use. Not only will Peter clean the cartridge, but he can check on wear patterns. That's how I settled on the AS adjustment for my arm.

Cheers,