My friend bought a Razer BW with blues. I tried it out. It's fine for what it is, if you can get it at a deal, it's not a bad keyboard. But no way would I say it's build quality is higher than a Leopold. Leo keycaps were thicker, less plasticky feeling. Even the little things like the keyboard feet, they just feel higher quality on the Leo. The board in general felt less "solid" as the fullsize BW was lighter and flexed more than the tenkeyless Leo. Then there's little things that just bother me personally. Like the font they use for the keys. And BW was sleek finish which I don't like, too much fingerprints. I asked my friend to try out and compare my Leo for a bit and he agreed with all my points.
Again, not saying BW is a poor keyboard, I'm not trying to **** on it. It's a good keyboard for the price. Leo with shipping would come out to around $130, you can find BWs on sale at frys for $80 sometimes, so I'd expect there to be a quality difference.