You'll get as many opinions as posters. For most of us (well, me), an oil change is an annual event. I can buy a gallon + 1 quart of Quickilver 25W-40 at Walmart for a little over $30.00 + tax. I can buy another brand, with viscosity rating outside the recommended range for what, $5-10. cheaper? I use Quicksilver.
My .02