You aren't saying what you use now for comparison....
When I run into the same problem, I look for a part of the image with a contrasty edge and use that.
As far as grain magnifiers go, the Microsight has 25x magnification. I also have a Micromega which is similar to the current Peak/Omega or whoever is making them now. That is a good one as well.
The other way you could go is to get something with less magnification like a Magnasight. With less magnification and a larger field, you are focusing more on the image than the grain. if you are making smaller prints with fine grain negs, you may find that to be more comfortable.
Hope that helps you.