Folks that have it seem to be getting way better framerates than Aerosoft Manhattan X.
There is a demo available, which has lower resolution ground graphics.
http://www.drzewiecki-design.net/prodNYCity_X.htm
Yep, but with the crazy amount of OOMs that have been reported, not worth the hassle for me. NY is a hard place to fly with decent graphics with default, no point adding to that and I have the Aerosooft one also.