I've got a working Ampico reproducing baby grand piano and lots of rolls, mostly from the 20s and 30s . New rolls have never been important as patching up the decaying paper on the old ones.
Ampico rolls have dynamics info coded in them and they have been considered as accurate digital records of long dead piano virtuosos - although, like all digital recordings, these were heavily edited. I especially recommend any four-hands rolls!
QRS rolls were always more pop oriented - cheesier in their arrangements, but functional.
I'd love to get a roll cutter of course - something always in the back of my mind.