how much should I spend to get a better turntable than my current turntable?

I tend to agree with @systembuilder22  about the classic vintage. However the problem there is that many of us have had those tables earlier in life and wore them out. So, unless you get one that has been rebuilt, its like buying a 1978 Chevy Malibu with 325,000 miles and expecting it to be reliable transportation.

OTOH you have a $400 TT now and for another $400 you may end up in the same dilemna with a different name. I'd look on Ebay or Reverb, etc to see if you can find a rebuilt classic. I have seen some in those places but they don't show up much on Agon Or USAM

My Dual 1019 was a Bay-Area craigslist bargain, $300 (includes Shure m55e cartridge which is the same stylus and mechanism as Shure V15 type 1). It was in like-new condition, but no accessories (i dumped about $150 into ebay for accessories, including 10-record changer, 45 rpm adapter, radio shack dust shield, spare headshell, spare 3x7 elliptical stylus PM3125DE, not as good as the 2x7 original stylus.) If can’t find a good dual then with $400 maybe just go with audio technica, preferably used. I don’t think you can go wrong with them.

P.S. Panasonic was my first love, my first and second radio. I love panasonic and therefore, technics, too.  They truly brought hifi to the masses!

@mgolpoor 

"Don't understand the question!!!"

Everyone else did.

Just because most people tried to advise without knowing your budget does not make this statement a valid question:

"What should I get for the littlest investment that would work better than this wobbly, squeaky  thing?" 

I suppose you could argue that grammatically its a question but then when one person suggested MoFi your response was "Super Expensive"

Like I said before Everybody here is ready to help, But, You need to sort out your budget first otherwise there are endless suggestion.

@mgolpoor 

let me try again. I have a turntable. I would like the next best turntable, one that works better than this. I identified this: mmf-2.2 Theoretically, the next best turntable could be one that costs more than this, or one that is better independent of the costs. So I agree with you, I should have left out the "how much should I spend" part. It's confusing. I should have said,

what the cheapest turntable that's better than this low quality mmf-2.2?