Hi Fran, I have the exact same setup and I dont look back! both these keyboards offer such a great variety of everything!

To me the BK9 has some nice punchier drum kits and basses than the G70. And again the pros and cons go on between the 2 boards.

When I purchased the BK9 I had every intent to sell the G70 thinking I wouldnt need it anymore but that definitely is not the case. Its simply too good to pass on

All the best!