I don't have any personal experience with this knife, though the Ferrum Forge Stinger, I hear, is pretty excellent and has most, if not all, of the features you're looking for. If you someone else has more experience with the Stinger, please chime in.
If you want a more upscale NOX, the WE Upshot is pretty much it with a more svelte handle.
Though, I also would highly suggest taking a look at the American Blade Works Model 1 if you're simply looking for a slim flipper knife. I've been wanting to try one of these since it looks like a great USA Made flipper for under 2 bills.