I'd opt for the new HD version from Trijicon. The steel tritium sights are well engineered & will hold up well. Novak type sights are good,
www.novaksights.com .
Bruce Grey, Grey Guns & the SIG Sauer Custom Shop may have night sight choices too.
I like the mixed color 3 dot types.
Many PDs & military forces use Trijicon night sights.
Clyde