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I have all three. They are all nice. The "best" one I would say is the S&B for eye relief, eye box, optical glass clarity, the illuminated dot is wonderful in full sun or complete darkness.
That being said I wouldnt pay full price for a new one compared to the TR24, or NF. The difference in price isnt worth it being slightly better. I got a very nice used one, if you can find a nice used one for 1,500-1,600 then its not to bad of a price.
Also depends on what you are going to use it for. All of my purchases are based on me using them for duty/SWAT.
I think the best buy for me is the NF 1-4 with FC2 reticule, based on that I work nights, and a majority of SWAT missions are conducted in low/no light. The illumination and reticule is very nice in low/no light.
I love the TR24 in day light, as well as the eye box. There is no issue with the TR24 as it has the Tritium for night use, although not as good as the NF or S&B, and also there is ambient light from street lights that the fiber optics can pick up in a city enviornment.
Google the snot out of each and read,read,and read. Then if you can use/handle all three that could help your decision on which optic best suites your needs/budget. Cant go wrong which ever one you pick, they are obviously my 3 favorites, I'm also buying a 2nd NF with the FC2 reticule.
On the TR24 and street lights....
I find the passive nature of the fiber optics is less than optimal in a mixed lighting enviroment. If you're shooting from a dark/covered posisiton to one of light, there is nothing for the fiber optics to gather. IMO, the fiber does a great job in daylight, not so much in enviroments of intermediate lighting. If you're standing under a street light, I can see it working, but why are you standing under a street light shooting at night?
On that list, i've owned a TR24-G and a S&B Short Dot LE with a P3 reticle. If I were to buy another TR24, it would be a TR24-R. Don't buy the "you can see more shades of green" hype. I've been looking ar red reticles for as long as I've been shooting. I find it easier to look for red, than green.
The S&B is better, but you have to understand that incremental improvements cost more and more the higher you go up the food chain. IMO, the S&B is w/o equal, but you pay for it. People want to say its not $1k better than a Nightforce, but the S&B has a specific set of features that you can't get in other platforms. There are some scopes which offer what they call daylight visible illumination, but it works differently than S&B's flashdot. The brilliance of the flashdot is that it is an Aimpoint built into a rifle scope, not a brightly illuminated reticle. At its nuclear bright max setting of 11, the battery life is rated at a minimum of 100 hours. Some of the other scopes on the highest setting is MUCH less.
On a side note, the tracking on the S&B is flat out amazing. One click is exactly what it says it is. You can spin the turrets all day, and as long as you return it, the zero does not change.
If you are mil/LE, S&B does have a proffessional pricing program....