Dear fellow friends,

I would like to know, are the styles in Roland GW-7 are the same as the ones in Roland EXR series?

What's the major advantage of GW-7 compared to EXR series?

Can somebody kind enough to give me opinions, I don't know which one to choose:
1. New GW-7
2. New EXR-5s
3. Used G-600

Thanks a lot my fellow friends.