The big advantage of the 2000 over the 1000 is the amount of available memory. This will permit you to store more than twice the amount of user files, thereby providing you with greater flexibility and ease of access. After trying both, the 2000 got the nod from me and lots of other professional entertainers.
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)