I've been there, owned both, would recommend the 9x50...

With a Rigel, you'll get in the general vicinity such that the 7 degree fov of the 6x30 won't be that great an advantage (if you didn't have any red-circle pointer, then there might be more reason to get it).

OTOH, the 9x50 will show you many DSOs directly (they may look like tiny fuzzies, but at least you'll know you're in the right place!). That's particularly true of brighter objects, especially brighter globulars.

I've not found the 5 degree fov to be a problem as the Rigel gets me so close that the finder can help from there (although often, if I'm using good star charts, I don't even need the finder).