I can tell you my Dewalt 20v cuts through anything. I have heard the Bosch circular 18v is a phenomenal tool, I have a lot of Bosch cordless tools, just not that one. I am in the process if increasing my Makita tools and will more likely than not get the new Makita brushless circ saw which is going to be a fantastic machine. Milwaukee has an awesome set of 18v Fuel circular saws, arguably the best (to many members (unbiased.....not!) here) in my opinion the non fuel version sucks (I had it and got rid of it a few years ago). I would also add that Ridged just introduced some new brushless tools and one of those ones is a 7-1/4" circular 18v. Regardless, most cordless 18v saws should do you fine if they come in Blue, Yellow, Red, Teal or Green or Orange.