I recommend rendering directly inside of Rhino. I previously went to Studio MAX, but I used the NPower utility that allowed me to bring in full NURBS surfacing and skip the whole ugly meshing mess.
Yes, you have to learn another app, but the boost in my output was 100%. I could do twice a much work without all of the back-and-forth conversions.
Look into V-Ray. It’s my favorite and there’s lots of good training available.