Do you mean serato? I have READ several reviews stating serato scratch live is better than FS, FS2. I have not tested either. I know that Richie Hawtin has gone from FS to rane. Chris Liebing did use FS but now uses a Traktor and Ableton combo... There also is a new contender, called torq by m-audio afaik. SSL seems to be generally valued highly. The only system i have used myself and not in a club-context is djdecks. Which costs almost nothing and in combination with good preamps and just about any timecoded vinyl enables you to at least (if not more) find out if the entire style of mixing is something you like. That's all i can add. djdecks is by far the cheapest afaik and really made my jaw drop so i can imagine the more expensive solutions would be even better. This torq thing enables you to use vst-plugins and u can use vst-plugins in djdecks as well.