I always followed my old man and used Craftsman for years because they always replaced them no questions asked. These days, Sears isn't around every corner. Since I work for Home Depot, AND, theres one around every corner (one 1 1/2 miles from my house), I buy Husky when I can. Same deal, replacements instantly with no hassles!
Used Strap ons when I was in QC at U-Haul, 'cus the rep was there 3 days a week to replace crap and always recalibrated my torque wrenches for free when I wanted. Sold all those tools to another guy there when I left.
Truth be told, can't really see a huge quality difference in any of them and I have broken all of them at one point or another. I'ts gonna happen, just need to know their guarantee and whether the retailer is nearby or not. If Sears is around the corner, buy Craftsman, If Home Depot, buy Husky, if (cough) Lowe's, buy Kobalt. I never said that officially! .
Ray