It's entirely up to user use profile. If I had it all to do over, instead of all these different guns, I would have bought a single AR10 style lower and two uppers, one 16" all around and one long DMR for reaching out. I'm pretty well locked into what I have, though so I am trying to tailor each rifle to a specific role.
The LWRC is the house gun. With that in mind, I have the heavy hitting 6.8 cartridge, a collapsible stock, no unnecessary weight and I will soon have a basic red dot optic and weapons light on it. Bump in the night, one full mag should clear the house of just about anything.
The S&W is the Swiss army knife. It carries everything needed to keep it running should a SHTF scenario arrive and I have to run for the hills. The fixed stock isn't tacticool to the range heroes, but it has enough storage for all my cleaning gear, and small replacement parts like pins and gas rings and realistically, it's only a bit longer than a fully collapsed carbine stock that carries nothing. In the grip I have an extra bolt and firing pin. The foregrip has additional storage as well. There is no fancy optic, just no BS flip up sights which, again, earns snickers from the goofs at the range, but I can hit what I want at 500 meters all day through iron sights and they don't need batteries. IMO, red dots are only a real advantage in close quarters for rapid acquisition.
The 300 is the puzzler. It's cool as hell, but I'm having a harder time figuring out a mission for it. If I was willing to go through the trouble of getting a suppressor, obviously, that's the rifle to mount one to, but I'm not, so it's sort of an $1800 white elephant.
The Ruger was intended to be my sniper rifle, but with the 700 around, it's become the all around domesticated hunting rifle. I don't hunt, but if things got to the point where I needed to put food on the table then sorry, Bambi, mother green learned me how to put lead on target and you are about to have a bad day.
The 700 is pure sex. Other than the caliber, it's a lethal package right out of the box. Being .223, though, I can share ammo with the S&W and if events called for Mr. Smith and I to go on walkabout, I would hope I could lug this sucker too. The ability to at least suppress targets out past the AR's effective range could mean life or death and this sucker can make some long distance phone calls.