A Baldor which is nice and wide, $50 tax included.
Baldor is the gold standard, especially in the smaller grinders. As good as it gets, generally. Its the grinder we all wish we had.
Sears Roebuck also sold a heavy duty grinders in the smaller sizes. Even these were too expensive for me through the years. They are commonly called block grinders since the center motor cover looks like a block. Usually cheaper on the second hand market than Baldor.
I currently have 3 grinders, and I hate them all!
I have 3 polishing heads in service and I marginally like these better.
I do have 2 ball bearing polishing heads in reserve though, and I have hope for those, someday.
I also have a good sized lap (9") I want to turn into a horizontal disk grinder one day.
I am currently short of motors and space. I have belts and pulleys and one motor ready to go, but the bench I use for the polishing heads is already crowded.
Oily
Easy things to look at when grinder shopping. The distance between the wheels. (Its really about armature strength and bearings, but the distance is the exterior tipoff.)
Eye guards? A pitiful piece of wimpy plastic barely hanging on? Is not a good sign.
Tool rests? paper thin stamped steel strapping is not what you want to see. Heavy cast iron and sturdy linkage,......... is.
yours Scott