I'm in the market for a 2" diagonal to replace the 1.25" one that came with my telescope. I assume my stock diagonal has relatively poor reflectivity. Do you think I would be better off with a CED2 for planetary and DSOs, or a more general-purpose brighter 2" diagonal and a filter, such as a Baader semi-APO, for planetary and lunar viewing?

To restate, do you think the CED2 would be brighter on DSOs than my stock diagonal? I don't have a lot of aperature to spare (4.7"). Is it a good compromise piece, or would I be better off with something else?

As a newbie, I've viewed mostly DSOs so far, but this partly reflects the relative unavailability of planetary targets right now. I don't yet have a sense of what my "specialty" will become.