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
Thanks a lot for the great advice. I lubricated the platter bearing with white lithium grease, but I am not sure exactly what to use for the motor. What do you suggest?
Check the VPI web site. You can access the Scout's manual there. It will tell you, or just call Jack or Mike. I seem to recall a teeny tiny drop of 40W motor oil, or something like that. VPI may even sell a little stick of it.
For motor shaft lubrication use a VERY light oil. Sewing machine oil works really well. To apply, see if you can get a hold a hypodermic needle which will allow you target the area of lubrication.
I got the scoutmaster set up with a soundsmith zephyr. Will let it break in for a few days, but it already sounds good. Will keep you all posted. Thanks a lot!
Arsh ... the Zephyr is my back-up cartridge. It's a very nice cartridge and was supposedly jointly designed by Peter Ledermann of S-S and Harry W of VPI fame. I think you are doing quite well.