Reply to DJM-800 or CDJ 1000s???

Soon, i'll be getting some money, and i've been wondering, i currently have cdjs 800s mk2, but i want to upgrade to the 1000s, because i hate it not being accurate enough. On the other hand, i have a really crappy mixer, and i'm wondering with the money i'll be receiving, should i upgrade my mixer, or cdjs?
This is the mixer i have

It's my dads old mixer.