The latter may soon become moot though, as there has been talk of abandoning metric and switching to the system you guys use. Right now its just talk though.
-Spyder
Taking over the world one measurement at a time...
Seriously though, I much prefer metric. I would actually be happier if the US went metric on everything. That way I'd only need one set of wrenches! Problem is, the companies that make wrenches will have none of that silliness...as they like selling twice as many products.
Funny, I never thought of that, but that's a good point. As my socket sets (I own three of various sizes) are all dual metric/imperial sets which could be cut in half if only one standard were followed.
My wrenches are mix of both, but mostly metric. Unlike socket sets, which almost always combine both standards (where I buy them anyway), most wrench sets - particularly the heavier duty/better grade - are sold separate sets: one metric, the other imperial. My imperial wrenches are from basic mixed sets, but my good wrenches are all metric, where the only car I work on is my own and it was built here in Canadian using the metric convention throughout.
-Spyder