i think the blue sky would be the one to get... or perhaps eventide's space pedal.
i've got a cathedral as well but aren't fond of many of the reverbs besides the spring. i don't use it in the studio too much anyway (more of a live device)... but i'd go with one of the two aforementioned ones.
reverb, to me anyway, is one of those things where higher quality really is better. i've yet to hear a "vintage" reverb that doesn't sound grainy and fairly useless... as opposed to vintage delays or whatever that has so much character. ... that is except for spring reverb, which i think has a lot of character... but, this is just my opinion. i prefer reverb to be very transparent... just space, ambience, or air... i like reverb you can't hear... if that makes any sense..