I love the tacori ring- the detailing is beautiful. I guess I'm kinda partial because my e-ring (and WB- it's both since I didn't want a wb) has a ton of detailing and a hidden diamond too.
As for custom ordering, does RB not have a jeweler that can do that? When we were looking for WBs, our jeweler said we could always custom order through them. I decided not to get a WB because i felt it took away from my ring, instead of complimenting it.
However, either way, I love both rings. And I agree, a better quality, smaller stone is a good idea. It will sparkle much more!