I purchased a PS1 QMX bpm system approx. 16 months ago.It is an excellent system,lots of pro features for your hard earned dollars....I've practiced on the system often,but never got the control,response,or sound of a vinyl scratch;it's more of an "effect",or sound altering performance. I've never tried a ps2,nor seen them in actual performance.Dose the scratching sound and feel more realistic on a ps2,what is this touch-sensitive jog wheel and how dose it differ from the ps1???What is accurate digital scratching 2.0,a program???Besides more effects...how dose the ps2 differ from the ps1??