From the specs, it looks like the new VTO2301R is skinnier and has a ever slightly better sensor (1/2.8" vs 1/2.9"). Is that the jist of the difference? Otherwise, they function the same, including the SIP functionality? I read there's no way to make the IR turn on for the bigger VTO2201F. Wonder if that's also an issue with the newer VTO2301R.
VTO2301R-P
VTO2301R-P