Okay, a utility knife isn't the sexiest tool in the toolbox, but it's damn...errr....utile! I must have gone through 30 of the suckers over the years. Almost all of them were Stanley, some better than others. Most knives hold five extra blades and there are several ways to change blades. Some knives have to be opened with a screwdriver to change the blade. Others have a button you push to release the blade and a swingout holder for the spare blades, and the new blade is inserted in the front of the knife. Stanley must have had ten different versions of utility knives in all.
I had one I liked and it went walkabout, so I was using my less-than-favorite backup while I looked for a replacement. Then I ran across this Lawson autoloading knife on eBay
It's a little larger and heavier than most utility knives, which is fine with me as it fits the hand better. It's also a bright yellow making it easier to locate when it's misplaced or dropped off of a roof into the ivy.
Anyway, just wanted to share that with anyone who might be interested.
R