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

I had a 1200 series Dual and replaced it with the MMF-7 which was much better. If you have a $500 budget This is one of the best Dual TT’s ever made according to many. What you have now is the very bottom of the ladder TT's.

Dual 5000

@audphile1 

I have to sell some gear to be able to buy the Fluance, I think that makes the most sense 

any idea where vintage Marantz sells the fastest?