DDJ SX or Kontrol S4 and 2 F1's

I'm wanting to get some new equipment after having to sell a couple good controllers a while back(s4 and ns7) to pay the bills. I really like the DDJ SX but the prices is rather steep so I'm considering a S4 and 2 F1's. I like the performances pads of the SX for the slicer mode and launching samples so I was thinking that I could do the same and then some with the F1's but can't find a concrete answer. Does anyone have any advice or experience with this? Any personal experience with live remixing with both setups or something similar?

Where would you get an S4 and two F1s cheaper than a DDJ-SX? Personally, I'd go for the Pioneer, based on rhythmic playability. The F1 is great for a "clip launching" type of feel but, I wouldn't bother trying to bang out on it. I have a DDJ-SP1, as well as F1, Maschine, and Midi Fighter and I personally think the SP1 takes the cake in that regard.

You can get the s4/f1 set up used for around 150$ cheaper.