i have had this thing for about three years now. sadly since i am moving at the end of the year i have to let it go. this is a very very awesome synth/workstation/keyboard/sequencer/sampler... the list goes on and on. featuring the karma engine, this keyboard takes playing to extreme. way beyond what a typical static arpegiator does. this thing adjusts the trills, sequences, pattern based on how fast you play, what chords you play and the dynamics that you play. the amazing thing about this board if you aren't a high level player this will make you sound great. i went ahead and loaded up all the sounds from my korg triton extreme onto the thing so you're getting a korg triton extreme with the karma engine. basically that is what the new m3 is.