Well, if it's an SDX then, it probably has more toms, kicks, snares, cymbals mic positions etc. SDX's are specifically designed for Superior and are always a better option if your using Superior Drummer. Might have to get me one of those. O hang on a minute, need to purchase a RCF Sub 718 AS active sub so, the SDX will have to wait. Heard the Mackie equivalent however, the RCF is 10 kilos lighter so that will probably what we go for. Going to listen to the RCF down at Absolute Music and can report back my findings that is, if anyone's interested. Regards, Phil Muir Accessibility Training Telephone: US (615) 713-2021 UK +44-1747-821-794 Mobile: UK +44-7968-136-246 E-mail: info@xxxxxxxxxxxxxxxxxxxxxxxxxxx URL: http://www.accessibilitytraining.co.uk/