The keyboard keybord E500 has exactly the same processor as the E300, so it sounds the same, however, the E500 is easy to use (for scne) because the manual cursors can (while playing) to change the parameter.
of surcrot (compared to e 300) with everything RULES entering the menu and therefore can not change whatever it is playing!
The e500 has a + between indpendante for a microphone with echo and always incorporated by rgl potentiomtre manual easy Accs. (it can also play oriental music) and they dfile do karaoke with the text on the screen
the e300 e500 as trs keyboards are valid, but now didemment DtrN the VA7 and K70 which is a must, the VA7 is very easy to use and the sound scne Ingala (but 3000 euros prize nine) with after touch, sensitive keyboard, ect ... Variphase

UTILIZATION

Very easy for the E500 because everything is visible potentiomtres mcaniques (sliders)
more difficult for the E300 because it is necessary to enter the menu.

but easy one as the other

OVERALL OPINION

I use it (random image and in combination with a Roland VA7 and a Hammond XB2 5 years.
it has the particularity to play the mandolin Italian and has two upper overlays and all the effects in the menu.
the accordion is very good and the organ thatre.
when I bought was a must, but the technology that is quickly Exceeds each keyboard.