If you like 10x for astro, how about the NL 10x52 versus the 10x50 WX? The big advantage of the NL is you wouldn't have to have a tripod, but with the WX you do because of the 5 1/2 pound weight. I guess the WX will still have the advantage in FOV because the NL 10x42 has a 399 foot FOV and the WX 10x50 has a 472 foot FOV. The 10x52 FOV would probably be pretty close to the NL 10x42 FOV, but maybe less.
The WX has a WIDE FOV! It is hard to beat. If you could pick up a WX 10x50 used for around $4000 and used a tripod it would still beat the NL, but it is a big advantage not needing a tripod. The NL 10x52 would be very sweet also. I think for all around use, I would take an NL 10x52 or 12x52 over a WX.