Some folks are giving personal opinions that are just plain wrong....
Overall the G70 has the best quality sound, all the samples are more detailed than the E50, and E60..and for that matter the G70 has an advantage over the E80 too...
Side by side comparison will always show the true facts...not a memory from one year to the next
I have done these comparisons ..not just with the Roland boards , but also the Korgs and Yamahas..
No Ian, the G70 is still the best sound bank in the Roland line up...Anyone with hands on experience and the means to do the side by side with same sound systems will know what I am talking about....
They all sound good, but the definition and detail of the sample makes the difference.....The G70 is absent of sample loop glitches that abound on Yamaha and Korg samples...I believe Roland still has the best sampling facility to date...
The other important sound design ..a uniform volume level and playability of the entire wave table..again Roland's strenght...