I use makita 18volt stuff and milwaukee 12 volt stuff. I run my 18 volt makita angle grinder pretty hard. I use it almost exclusively even though I have a whole drawer of corded grinders. It is just more convenient. I am not sure about the battery life compared to other cordless, but I have 10 batteries so I just switch out without thinking about it. I feel like the life is good though. I have friends with the dewalt version and they seem to like it. You are welcome to borrow my makita and a couple batteries and try it out for a bit if you would like.Unfortunate to hear about @Greg 's Milwaukee grinder experience, that was on my radar. I've been packing a welder around for a decade (and used it on many occasions) but always packed a 110V Dewalt and inverter. I'm really aiming to simplify that. I've personally had great luck with Dewalt cordless and corded goods but my stuff is several iterations behind and if I'm jumping into new stuff, anything is on the table.