I picked up one of these a few months ago, with the idea that I'd use it as a lower manual with my Tyros 3 (no, I don't have that yet!) ... I used to use a Technics KN-7000 as upper and an older 76 lower, plus pedals.

Ironically, for now I have moved to a S900, no lower manual, no pedals - for some gigs.

NP30 seems nice for the price, and I like having 76 notes of piano always available no matter what's on my upper keyboard for sounds ...

Jim