Long ago and in a galaxy, umm...under my feet...I bought an "anniversary" edition of the Super Sawzall. I don't use it often, but it sure is a beast when it's the right tool for the job. Heavy, powerful, eats electricity for breakfast, lunch, dinner and snacks, but it will cut through anything with the correct blade. I suspect if I were going to buy one today, given my history of limited us, I'd go lighter, but I can't say enough praise about the one Milwaukee tool I own...the Super Sawzall.
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The most expensive tool is the one you buy "cheaply" and often...