I used an optech for years, but was always uncomfortable with the quick release buckles on it - I never liked that there was the possibility of it coming undone and my camera falling to the ground, or that a thief could undo it and be off before I could react.
I now use a Crumpler Industry Disgrace strap, in black (they do a bright red canon branded version...).
I dislike branded straps, particularly the current canon ones - they have writ large upon them "CANON" "DIGITAL" "EOS 7D" etc... A great way to attract unwanted attention.
My parents and my partner all prefer the canon pro style strap, which is narrower and more flexible than the standard canon straps, with just a 6-8in section of larger width for the back of the neck. Thankfully they're not quite so loudly emblazoned with branding...