Rode the NJ Transit XD60 for first time today, and man they run circles around MTA XD60s. I was surprised at how fast and smooth they accelerate, reminded me of the first time I rode the then LIB 1700 Orions.
Sound wise they sound like the NICE bus XN40s. It's funny, the newest MTA XD60s and the NJT units have the same powertrain (Cummins L9/Allison) yet they sound different.
So for those who are disappointed that New Flyer XD buses are invading every bus operation in the Tri State, there's some variety when it comes to sound at the very least.
The MTA XD60s do seem to handle pot holes better and such, NJT XD feel like they will end up being rattle traps soon.