I have been using the 1st generation S4 since it's release, which has served me well, but is now battered and worn. I decided to 'downscale' to the S2, as I felt it would adequately meet my needs. I could not be more satisfied. The build quality has improved and the buttons and jog wheels are more responsive and hardy. I feel more 'in touch' with the software and am ejoying the enhanced flux mode facility. I visted america from South Africa and DJTT were nothing less than amazing in shipping my unit to my hotel, and this after discovering that they were out of stock on my initial order. Charlie went ou of his way to expedite my delivery. Thank you DJTT, and I am loving the complimentary Chromcaps. I am more than satisfied with my controller, and blown away by DJTT's service. Full marks on both accounts.