I use a Mewlon 210 and it is great with NV, especially for the smaller objects or any object like globulars that need image scale/magnification.
I use an Astro-Physics diagonal and a 2” Antares .7 reducer to get around F8. I also use the native FL as well.
Depending on how much light path the prism diagonal uses, and if you use an aftermarket focuser, you may or may not need a mirror diagonal with a shorter light path. The AP diagonal has a short light path.
I screw the 2” reducer into the bottom of the 1.25” to 2” adaptor that comes with most diagonals. This works fine.
I’ve had my best views ever of the core of the Orion Nebula, M27, faint globulars, etc. with the Mewlon and NV.
Any object that fits in the field will look great. Most galaxies, planetary nebula, globular clusters etc. will easily fit in the field.
Some people here use Celestron C11s with no problems as well.