Russ,
the styles in the E80 have the edge on the G70 because of sounds and drum kits not found in the G70. You also have to choose between 76 keys and no internal speakers or 61 keys and a very good internal speaker system. The layout is also more user friendly because of it's newer design. The other thing for someone like yourself is the ability to have two srx expansion boards available for additional sounds. This might seem so important, but if you want to have killer organs and vintage keyboards from one card and then would like to have Rolands great Studio collectin or World collection or strings and orchestral sounds, you would only get to have one of these on the G70, not the two as the E80 will allow.
The E60 has the same Compact Flash capability as the G70 and the E80 for storage like a hard drive. The biggest difference is that there is more internal memory on the G70 and the E80.

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George Kaye
Kaye's Music Scene
Reseda, California
818-881-5566
www.kayesmusicscene.com