Highly recommend Trijicon HD’s. Wonderful! My second suggestion is the Ameriglo sights.
The Dawsons are my choice as well. Excellent sights and a flexible bunch to work with. With Dawsons, you can have it you way in regards to sight height, width, ... If you are picky about how you want your sights set up, Dawsons might be for you.I have Dawson Precision fixed charger sight set with tritium front and rear on my PPQ. They are great!
Hint: View the videos in the resource center (bottom left of home page) before you buy. Also, if you decide to install yourself, get some Loctite from them. They use to install the sights for you for a small fee. Contact them to see if that option is still offered. Here is a PPQ page...
Let us know how it goes with the Meps.Well, in a turn of events, I went budget and ordered the 18801 Meprolight sights for $59.74 shipped. I will review them once I get them installed and go to the range.