I'm from Canada and I just ordered an A.R.E. "Z" series.

Z Series Truck Caps : A.R.E. Truck Caps and Tonneau Covers



They're slick looking with a pile of options available, and apparently rock solid.

(Pretty pricey though, I'm into mine for around $3k CAD)

I had a Leer on my '06 and the latches gave me fits.