Craftsman is the best bang for the buck at about $100, no doubt, but 200 lbs is on the low side and the cheapie version is nicad not lithium ion. It is not lifetime warranty, unlike hand tools.
Another good option is the Kobalt sold at Lowes. I think it is 300 lbs, may have a better warranty, and is lithium ion. But it is more like $275.
I use Milwaukee 18V lithium ion. It has 450 lbs torque, but is more like $375. I rarely use air anymore, it is so good.
With any of these, you can buy the tool only for other tools and use these batteries. Like a lightweight lower torque impact or drill or sawsall or circular saw or whatever.