J.A.L welcome to IIS

I see I have missed the que to be your second, third, fourth husband so will just give up gracefully......
As to your question which, I might say has been well put. I agree with Steve that an eyepiece around the 20mm mark would be very useful so, unless you have your heart set on ultra wides, you could consider either:
- a 19mm Panoptic with a 68 degree AFOV and 13mm eyerelief at $335 or,
- an 18mm Radian with a 60 degree AFOV and 20mm eyerelief at $329 (better if he needs to wear specs when observing)
One of these coupled with a Televue 2x barlow at $149 would give your extremely lucky husband a wonderful range.
Cheers