To better answer that question, I have one of my own. What role do you see the knife performing? Will this be a hunting knife, a camping knife, a utility knife, a weapon, a collection piece to admire? Each of your choices excels at some tasks better than the others.
Trident 2.0.
Probably the most aesthetically appealing of your three choices, it's also the heaviest at 11.2 oz and the most expensive at $200 MSRP. It's a combat design derived from the original SOG knives and has a keen point for stabbing which might break if you start digging and prying with it. With its high grind and slightly angled edge profile, it should cut very well, though. It's a very classy piece.
Daggert II.
My personal pick of your three choices. It's the lightest of the three at 8.5 oz which means it's most likely going to be the fastest. It's in the middle, price wise at $130. The Daggert is a stabbing weapon and the best of the three suited for that very specialized task. The wide leaf point probably would be more resistant to snapping than the Trident, but not by much. They're both essentially weapons. The Daggert is least utilitarian of the three choices and the double grind means it won't cut nearly as well as either the Trident or the Gov-Tac. Still, the designers at SOG tried to get the most cutting ability they could out of the design giving the profile a slight leaf shape with a bit of "belly" to each edge near the point.
Gov-Tac.
Probably the most useful at day to day tasks of your three choices. It's the middle weight at 9.6 oz but the cheapest at $125 MSRP. The Gov-Tack shares the same handle and guard as the Daggert which means it'll be a comfortable tool to use. The blade on the Gov-Tac is a winner for practicality. The point isn't as thin as either the Trident or the Daggert, which means it's less likely to chip or snap. The blade has a very high grind and a thin edge which means the Gov Tac should probably be the best at cutting of your three choices.
So, if you wanted a "collector", the Trident 2.0 wins for its great looks and classy design. It's definitely the nicest looking of the three knives.
If you want a "weapon", the Daggert II wins for its stabbing capability and all the other interesting things daggers can do if you're familiar with their use.
If you want a "practical", the Gov-Tac wins for its solid blade design, durable point, and fantastic high ground edge for fine cutting.