PA 50,period.(even better choice over exr 7)

it has 4 variations(exr has 2)
better sound board/deeper seq
can write user styles(exr3,5,7 can't)
yes D drive(only exr 5 has it not exr 3)
USB in exr 3 doesnt help(you must have a lap/desk top t use it.(even new cheap yams has USB.)
20mb solid state disk(exr has 1.5mb flash ram)
it's(exr's) usb is not USB to device(like 1500 and 3000)where you can use a thumb drive and load styles/songs.


the only pros that exr can offer is better keys(for some)and more well cut(unbulky)shape,V link,and some pop/dance/rock set changes(which is nothing compared to 4 style variations that PA or yam psr 1100,1500 offer).