For the record I have NO dewalt grinders. Only dewalt cordless tools. (they were cheap/used)
I have a Makita grinder that refuses to die.
I have killed COMMERCIAL 7 inch craftsmen brand, not the **** at sears, but the catalog one that was $260. It was the heaviest around but had massive power but died a short life of 3 years.
I have killed a Snapon 7 inch grinder too. It lasted long enough to kill the bearings after 7 years. $250 on that one.
Now Im using my backup 4 inch Makita and my spare HF grinder.
The Makita is going on its 5th year of abuse here since replacing FULL size grinders. I got the Makita as a used hand me down also.
Took me 12 years to finaly wear out my Makita sawzall too.