I love the bezeled sidestones, and like you said, it's not something you see very often, so it would be somewhat unique! I also like the scale of it better, with the narrower shank. I think the Weston ring + claw prongs + a pretty basket would be gorgeous.
That is probably what I will go with. I think I would prefer the more sleek look of the other one if I were using an OEC Moissanite or an Asha, but since its a colored stone, I think I prefer the bezeled side stones with it.