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

Don't understand the question!!!

Are you asking us "what is your budget"?

Regas are all a step up from what you have.

Jasonbourne52 is right on the money with the Pioneer also Sony have decent machines.....

So sort out your budget and if you don't have a physical dealer near you then come back for some suggestion.

Good Luck.....its all worth it at the end :-)

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.

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!