I just bought the waza guitar version, the bass sounds great. Practice playing along using spotify or band recordings, which sound miles better using the 3D stage setting. I'm not convinced the bass specific one would be any better sound wise but obviously has some bass specific options. I like the 3D effect but turn off the gyroscope so it's equal in each ear. The bass version has a few drum patterns but I have a drum machine app on my phone so not really needed. The chorus, flanger and echo effects sound great. Not sure what the bass version amp choices give, so has anyone had both is there much difference apart from price.