I've been using my 30 year old Carton Adlerblick 7x50's on a Vista parallelogram mount for public outreach lately. They work well together but I'm thinking of something more high power for better views of objects like the Moon, picking out Jupiter's moons, some double stars, M31, M45, Double Cluster, etc. I'm in suburban light pollution so I'm assuming a darker sky background and smaller exit pupil might actually help.
Due to the way the Vista pgram attaches to the binoculars I think I'm limited to porros as the metal arm is too wide for roof prism designs especially at narrower IPD's. Although there is more selection at 10x50, I was thinking of 12x50 or even 16x50 since it will be mounted. Eye relief at public outreach is important in my experience, at least 16mm would preferred (the Adlerblick's are crazy at 23mm). So far I'm looking at the Nikon Action Extreme 12x50 and 16x50 and Pentax SP WP 12x50. I think I can go up to about 40 oz but prefer to keep it under that for the Vista mount design which is not the strongest.
I've seen reviews of the Nikon AE and the Pentax 12x50's which seem pretty close, the Pentax seems to get an edge in coatings and edge of field sharpness where the Nikon's do have a wider TFOV (and AFOV?). I also looked at the Athlon 12x50 porros which have 14mm eye relief which might be on the tight side.
Are there any models I'm missing given what I'm looking for? Would 16x50 be too restrictive a view, or maybe actually more impressive on some objects like the Moon?