I've had the same old Millwaukee Sawzall for about 15 years. It has cut
2X stock, 4X stock, tree limbs, bumpers, iron pipe, cast iron, lots of bolts, etc. etc. Never used a Porter Cable, but I have other PC tools and they work great too. Either way you can't go wrong. I probably own 8 Milwaukee power tools including a big old Rotary Hammer which is GREAT cause I can switch to hammer only mode and break up sidewalks, foundations etc.