I'm with Rob (mostly) on this - no suprise, I was one of the folks prodding him into getting a 10mm XW earlier this year
A couple of points:
1) Why do you want the widest FOV???
For a dob driver, that means you have to bump the scope along less often.
For a tracking scope driver, that means you can go with higher power (read more contrast) on a large object and still get it all into the same FOV.
2) The Radians are nice, no doubt about it, but I like the Pentax better for a couple of reasons.
The adjustable eyecup is awesome. I can go between wearing my contacts and/or glasses without any issues on eyeplacement
The Pentaxes are physically bigger, so they are more comfortable to use AND don't fog up quite as bad as the Radians.
I still keep my plossls for when I let the kids look through my scope, but once you go Pentax, you'll never want to look through a plossl again