Reply to Looking into 4-deck mixers. Recommendations?

Hello again, everyone.

After having stuck with 2-deck mixing for the past two years, I find myself wishing that I had a third (and sometimes fourth) deck to mix with. My mixing style is quite reminiscent of what I have seen of Kissy Sell-out, using accapellas, instrumentals, and the like not uncommonly. I also scratch, and it would be nice to have another deck dedicated to scratching.

What four-channel mixers would you recommend? I have used serato all my dj life, and do not use a lot of effects. I mix aggressively and often, but do throw in delays/loop rolls/filter/flange on occasion to spice things up. As for my price range, I'd prefer to spend less than a thousand, as I have to pay for medical school next year. I have no qualms about used gear .