I know people are on budgets, but I have to say something - nothing beats a stereo microscope and a miscroscope camera. Today I just ordered a 2nd
AmScope stereo microscope that has 5x,10x,20x 30x. I spent 145.00 on the microscope. I already have a 5 MP microscope camera on the other scope, and its removable, so I'll simply relocate, snap a pic and move on.
The microscope cameras can cost upwards of 100-150 bucks as well, but honestly its money well spent. No more straining to see quality photos. No juggling a camera through a Loupe and hoping for the best. Alittle shake and things come out blurry.
I've tried your avenue and I had to switch. But I understand you have got to use what you can afford, and feel comfortable with.
I dove in and bought the first scope and use it all the time. You should see if a hobby shop or other style store has some stereo microscopes on display. put a coin under the scope and have a look at the coin at 20X or even 10x magnification. It will open up a new way of viewing coins, and almost instantly raise your awareness, and you'll be able to ID the issues with the coins a lot faster, and probably even miss less potential errors. With a Loupe, I probably could process MAYBE 5 coins a minute if I was going really quick nd looking for one specific issue. If I am using a scope, at the same speed I probably can do 20+ coins a minute, if I am looking for one specific issue, like a particular mint mark variety.