I don't understand.

You bought a Roland EXR3 to replace an EXR7 which replaces a PSR3000.

You want to see if you can use an EXR3 to go live!!!!!
I would think the PSR3000 is for live work. IMHO.
This is how I would rate those keyboards:
PSR3000
EXR7
EXR3
IMO you keep downgrading. That's different.
Starkeeper
[This message has been edited by Starkeeper (edited 09-16-2005).]