Right now I have all Dewalt 18v tools. 1 hammer drill(weak), 2 VSR drills, 1 impact and a circular saw. I have 4 XRP batteries (1 rebuild) and 2 regular and 2 chargers. Both the regular batteries are weak. The hammer drill is weak but the other tools are in great shape. While looking at Makita tools at Home Depot I ran across an 18v lithium brushless impact/hammer drill/2 3ah batteries/charger kit marked down by 1/3. Old model I believe is the reason for the markdown. Seems like a decent deal?! So, is it worth it to upgrade, or should I stick with the Dewalts until the tools or batteries start dying? I thought about keeping the circular saw, 2 of the 4 batteries/1 charger and selling the drills/impact/charger which should buy at least 1 extra battery. I don't need to upgrade but this set just caught my eye. Will the brushless lithium powered tool be an improvement worth going for? Thanks. Greg