The G70 still remains a fantastic sounding full rich quality arranger no doubt. With the right speakers & Eq, tweaking the Bk5 could be made to really sound terrific...as great players like Don Mason has showed with his Roland BK7m many time....The Bk5 will be a nice gigging lightweight rig for sure....can't wait to try one.My only concern as I have discussed with Don is that using the Bk7m with a controller Kb like the Roland A500 pro would allow you many more feature choice in live play vs the Bk5 kb version..