Thumbs up on the 18v stuff.  I bought the wrench and two batteries a couple of years ago.  Last year, I sadly needed to replace my old friend, a Monkey Ward circular saw that was nearly 50 years young when all the adjustment bolts finally got lost or fell out.  Got a “reconditioned” or opened-returned Milwaukee circular saw for like $150 alone last summer!  Looks new, acts new and wow, do I love the 18v batteries and the tools they drive.  Not stringing extension cords to use a circular saw?  Priceless improvement in doing stuff for this old guy!!