Dan BTW: I sold my Prelude with a case to the band for $650 ..2 years ago...

A used BK5 for a few more dollars is by far the better unit...Prelude is worth about $400-$500.... a used BK5 $500-$600..

BK has unlimited size..I used 32 g drive with thousands of songs...and had a search feature..BK has better sounds (GS-SC) and better drum kits..