I am sure the N10 is older but I am not sure it is better. I never heard it.
So…prior to purchasing my N200 I’ve done some research and it indicated that the newer N200 is possibly a more resolving sounding streamer than the warmer/darker (as described by some) N10. The newer series Aurender features internal SSD for caching, updated galvanically isolated audio only USB out, better isolated network components and better processor, plus two slots for mounting SSDs of your choice with music library and is about to become Roon certified, which it did.
The older N10 wasn’t going to become Roon ready ever and it uses either 4tb or 8tb HDD for storage - no flexibility to add SSD.
I am sure the N10 is amazing but I won’t be trading my N200 in for the older unit.