I'm looking into buying an impact wrench for my tool collection. I intend to mostly buy ryobi tools for their battery platform. The only thing they don't offer right now that I want is a high torque impact. The only one they have is a 300 ft/lb one. Is this amount of torque enough for most jobs? I want to have it around just to bust old rusted bolts for some of the bigger projects. I want a cordless one for the junkyard. I could just buy a milwaukee impact or dewalt, but then the charger and battery waste space. I could also consider getting the portable ryobi compressor and carry that with me and a pnuematic, but thats a lot less convenient. Is the 1400 ft/lbs really necessary for working on a 3/4 ton squarebody or most bigger cars for that matter? Is 300 a good amount or do I need more? Hoping this might be helpful to some others looking for a good impact as well. Right now I'm in love with ryobi because they don't change the batteries and they are really affordable.