I'd pick up the one on the right. It has the exact same stem as an AF, which is the same as a Nour.
See the resemblance?
I would prefer if mine were a solid color, such as the one in your picture.
Pull the stem out of the base, and see if the port holes are a wide or narrow gauge. According to PL the Nours had a slightly smaller gauge to the holes in comparison to the AF Solids. I've compared as well, and they definitely do. (Not that it's very challenging to open them up) If it has a smaller hole, you'll just have a bit of a tighter draw. Some people prefer a tighter draw, so it's up to you really.