As others mentioned, the Trijicons give a slightly brighter and more precise dot, but (IMO) they hardly destroy the Meprolights in regards to brightness.
I find both to be quality sights and totally adequate in the dark, but I tend to agree with CPshooter in that "I think the Meprolights still offer a better sight picture" in all light conditions.
Regards,
Greg
I am as anal retentive as they come and stressed over which to buy for weeks.
I went to Glockmeister in Mesa, AZ and literally compared the Mepros and Trijis side by side in their darkroom (bathroom)
.
I found the trijis to be 'crisper' while the Mepros were 'fuzzier'.
Both were equally bright to my eye.
I chose the Trijis, but have regretted it.
As previously stated, the Trijicons have much less of a white ring around them .
The mepros have a thicker white ring around the insert, and for me at least allow for better pickup during 99% of my shooting (daylight or indoor range)
The mepros were not so fuzzy as to be an issue, and in a nighttime defense encounter, I don't need 75 yard precision with my handgun.
I will choose Meprolight from here on out. I did have a Sig239 with Tru Glo TFOs, but didn't particularly like the cost or size, and although I found them to be like glowsticks in medium to strong ambient light, as a night sight, I found the tubes to sap too much of the tritium glow.
My opinion in summary:
Mepros
About $20-30 less expensive than Trijicons
Larger white ring around the insert allowing for better all around sight acquisition