You can't really compare the durability, it's an apples to oranges comparison. The lenses on the morettes are glass, the stock lights have a big plastic lens. I've had to replace a Morette projector canister already from a huge rock on my way to the ski hill, since then I've put 3mm stongard on the lenses and have had no problems.
Valeo is just a lamp manufacturer, they're reflector lenses. They aren't HID, I've seen the '04+ lights in person. If they were, they'd be advertised as HID.
Jamie, I'm pretty sure the lights I saw at the shop for the 04s were reflectors, the web site says they're projector low beams