X65.
11,000 lumens, 1,600 meters. Still rocks after a few years. Exciting beam performance and beam profile in a nice, tidy package.
R90TS has much more lumens, almost the same throw, wider beam width, in a larger fan-cooled package. My second favorite, due to package is at the upper end of my size spectrum.
As soon as Acebeam released preliminary specs for the X65 a few years ago, I became visibly excited. When I got mine in December, 2016, I started saving for my second specimen. The only light that I have two of, so it must be that favorite of my right side of my brain. My left side of my brains' favorite light must be the Olight S2 Baton, because that is the light that I use most often.
Largest lights: Exciting enough to keep up with and take outside occasionally.
Smaller lights: Not exciting, but used most often.
Medium size lights: Moderately exciting, and used sometimes.