People think that the EVO and 8X are near identical... they are both Roland 8X derivatives, but they are not identical. Roland created this accordion to make the 8X what it was and the creator of the EVO "borrowed" a crippled version of the 8X because he did not want to pay for the full licensing and so had many really good features removed.
They say that the 8X has a slow keyboard. Anyone see how slow Cory Pesaturo plays on his Roland? I'd say that the player there has a greater infuence there. Keyboard depth is increased on the 8X to have touch sensitivity and velocity keys features.
The EVO has only 2 things on an 8X:
- much better color design
- better feeling keyboard
What the 8X has on the EVO:
- Easier to access battery (don't have to split the accordion to remove/replace)
- Ability to bend notes and change parameters like the vibrato modes from the keyboard just by pressing a bit harder
- way more expansion sets for greater sound abilities (9 expansion sets vs whatever the EVO has integrated, which I believe is 3 or 4 expansion sets so hundreds of instruments, less if I recall correctly and the Roland expansion sets cannot be added to the EVO)
- The computer editor. It is so much easier to customize your 8X on the computer over the convoluted menu system. IMHO this one feature alone is worth more than the good looks of the EVO.
- Greater resource for repairs... any Roland dealer world-wide. No Roland dealer will look at an EVO, only ONE place on earth for the EVO (Petosa, and they have exactly zero spare parts).
- $2000 less ($2500-$3000 if you compare to the premium models).
There are other/more "differences" but this was just off the top of my head.
The biggest plus for me was the fact that when I bought my 8X it had been used for less than 2 hours, so for all intents, brand new, and for slightly less than 1/2 the price of a new one. It was a no brainer for me.
I respect everyone's right to make their choice, but I went through that exercise before I decided on the 8X and also had the pleasure of having it 2 years earlier. While some were waiting for the EVO to come out, I was playing on the 8X. That is something that no amount of money can compensate for.