The E80 was an improved G70... more MFX processors, independent Master EQ and compressors for Style/SMF and Keyboard Part sides, 2 SRX slots instead of the one, MP3 playback (after an update), .bmp picture display (good for charts), plus many OS improvements. And some really good new drum kits (many of which are the core kits for the BK series)...

Sadly, Roland never decided to release it as a 76 (G80?). I would have bought one...