I think for U-Notches, the 10-8's you've been using are the best on the market. I think I still have a set of the ZEV's, but nothing special.

On the surface, I would say you can't go wrong with Trijicon, but over the years, I'm not sure that I really believe I need tritium night sights. If I'm shooting in low light, this day and age, I really need to use that light to ID my target, which has kind of negated my need for "night sights." As always, if you get the Trijicons, report back on what you think.