The best scratch serato live mixer setup?

Hello, guys!
I've just got 1 simple question:
what's the best setup for scratching vinyls and serato timecodes + mixing? I know it's a little bit nooby to ask in this manner. But i need some input. I just want to get more opinions on this topic.

I've read that TTM57sl is good but a little bit limited? Would it be better to buy ttm56 + sl4?
Wondering if sixtyeight is any good?
Or maybe i need to stick to Pioneer?

Tell me more on this.

Thanks

I don't have serato yet but do plan to get it in the future. Here's a quick run down
Sl4 is the most exspensive as it allows you to connect to laptops at once ie in a club where u don't want the music to stop when u swap gear or pehaps when a friend comes round but then u would need to setups
So sl1 slightly more latency than 2/3 although many don't really see much of a difference, an more complicated wiring if ur jus gonna leave it out your home setup this won't matter tho
Sl2 or 3 then. 3 can record your sets internaly 2 can't I don't think both are usb 2.0 an I think sl3 is the only one of these two that has a aux, but not sure on that one.

So you could get a bargain sl1 but I think there may of been issues with the newer os x like lion or was it sl2/3 would play nice with older os's lol can't remember but something to think about dependin on ur system. If u already have a daw that u can record on maybe sl2 could be a cheaper solution.

You could go for a new rane mixer but as u already have a mixer you don't have to get a new one with built in serato unless u wanted to of course.
One thing to bare in mind is that the fader caps on the ranes are different to other mixers so deffo try b4 u by if you go down that route.

I'm jus gonna use serato with my very old now 05 as I don't care much for fx I jus wanna use control vinyls like I would the real thing.

Thanks!

Here is the comparison table:
http://www.rane.com/sixtyone.html#gpm1_8