LOL, spoken like a true sparkie.
There are a few electricians that I have met prefer the Panasonic or Milwaukee, while everyone else that seriously pushes their tools hard prefer Dewalt or Makita.
<--- industrial & commercial heating plumbing/gasfiting/heatpump.
Day to day I use the Makita. On the rare occasion I need extra power, the Milwaukee stuff comes out. As far as weight, balance, reducing fatigue, and ergonomics, you can't beat the Makita LXT line for what I use it for.
The M18 system from Milwaukee is a hell of a lot better than the V18 Lithium Ion, which was heavy and weak. The only reason I run dual kits is I managed to make out like a bandit when Home Depot was running an M18 special. They had their 4 piece combo kit for $350, and when you bought $1000 worth of power tools, you got $300 off. The 4 piece combo came with the Compact Drill, Sawzall, Circular Saw, and Flashlight, with the Impact Driver included as a bonus. Milwaukee was also running a special where if you bought their 4 piece combo kit, you could get a free tool via MIR. So I got the 3 kits for ~$810 after tax, sold 2 of the kits for ~$400 each, got 3 free tools (grinder, Hammer Drill, battery) via MIR and kept the 5 piece combo kit. All for about $50 after everything (gas, postage, time, etc).
For circular saw blades, I almost always use Freud. I wound up getting the cheaper LXT Circular Saw (Home Depot clearance sale for about $30), which doesn't have the electronic brake. Just didn't like the performance on it at all, even with the Freud blades.
I also managed to pick up a ton of batteries for the Makita line when Home Depot was clearing out the 2 packs. The 2 pack of 3Ah batteries was $89, with the 2 pack of 1.5Ah batteries at $59. Used some Lowes coupons to sweeten it up a bit.