Milwaukee M18 Fuel will serve you very well. We have them here at work and they get the snot used out of them daily and they keep on going, we hardly use any pneumatic tools anymore. We still have the first M18 4-1/2" grinder we bought about 4 years ago and it gets used daily with zero issues. When my personal shop burnt earlier this year I had alot of electric, pneumatic and Ridgid cordless tools. I bought only Milwaukee M18 tools to replace what was lost.