I had many different brands from Stanley, Empire, Stabila and a few others. The Stabila have tended to be my favorites. They are a bit more pricey then the others but the benifits in build quality, longevity, and accuracy i think more than make up for that. I have a hand full of sizes from my 6" torpedo, my 15", 2', 4',5'and 6' jamb level that i mostly use while i'm trimming, i also have an 8' and extendable plate level that when closed is around 7' and when fully extended stretches to 12' 6 that comes in handy while framing and setting longer runs of cabinetry. They all have a time and place to be used. Im lucky enough to have a large variety of sizes, but could get buy with half of them if push came to shove.