I have had both, and both are just fine.
When the tritium in the sight dims as they all do (tritium is a low-grade radioactive material with a half-life of ~12 years) you can send the slide back to Trijicon, and they will replace the tritium inserts without disturbing the sights themselves. This is done at a modest cost ($18 per vial, $54 for all three "dots").
If your sights are already properly adjusted, this is very handy, and saves both the expense of a new set of night sights ($100) as well as the installation and the ammo and time to get the sights back on target.
If you don't plan on keeping the pistol for a long time, either will do the same job. I prefer the Trijicons because I plan on keeping some of my 1911s for a long time. Also works well if you buy a used pistol with Trijicons and get the night sights refreshed for a reasonable price (as I did recently with a 10-year old Les Baer.)