Gpaulp the x5d is a synth and e09 is an arranger. Hard to compare. It seems the x5d has 8mb wave memory..is that the same as wave rom? Lucky2bhere someone told me the sound quality of the e09 is vastly better than the em series and almost as good as the exr series. I wonder what the wave rom of the exr series was...also i notice the GW7 also has 32mb wave rom but 8 sounds less than the e09 and 10 drum kits less...so it probably sounds similar. How did it sound in the shop when that guy played it? Good? Great?