Reply to CDJ 400s - HID/MIDI Controllers in Traktor

I am looking at getting either some CDJ 800s of 400s - probably 400s though because of the ability to use USB as well as use with Traktor in HID or MIDI - Anyone have experience with this? I have heard some mixed things such as jog being laggy - being able to use 3 CDJs as HID controllers would also be a big perk.