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


You want details hah!
I bet....

CURRENT: mmf-2.2. A lemon, a complete junk in my opinion. A disaster from the start. What I can I do with it? It was delivered with missing screws, the lift arm level broke in 3 months, all I got in the name of warranty a list of things not under warranty. I don't want to criticize the brand, maybe I just got unlucky, they are otherwise great. 

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

grislybutter

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!

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?

Although there are plenty of used turntable and no doubt many of them would be a valid contender here I would stay away from recommending one due to the fact that there is no way to know their condition.

I don't know if you can stretch your budget to the Rega P2, if you can I think you will find its of a different quality specially its Arm which will see you through several cartridge upgrades. I personally think that's an important consideration since in this hobby we typically upgrade the cartridge until we reach the point where the Arm and table can no longer support the upgrade.

In the case of P2 you will probably need to spend $2000+ to significantly better its arm and structure.

Hope this helps narrow down the search!