Mind if I jump in here? I hope it's not too late. I'd like to point out a couple of things that might save you some Time & Money!
First, you're talking about different calibers and brands of rifles. Second, you're spending a LOT of $$$ on 3 different items when you could get 1 or 2 for the same amount of money.
I'm suggesting to you that you can alter the power level of the bolt-action rifle caliber with the recent introduction of enhanced power ammunition. This bumps the calibers' power up almost an entire notch. Therefore, your .308 will almost equal the .30-06; the -06 jumps to near .300 Win.Mag.; etc.
Also, the Remington and Winchester rifles are different enough to be cause for pause when you switch back and forth. The Winchester model you show in the photo has the "push feed" system, like the Remington does, but, the safety and the rest of the controls are not the same. It'd be kinda weird going from one to the other.
The Remington ADL is a blind magazine which I wouldn't recommend, because you must jack out the rounds from the rifle when unloading unfired ammo.
Now, you wonder what I'd foist upon you for a choice?
It sounds as thought you want plinking and possible hunting action from two different rifles. The power levels of the 3 cartridges you mentioned in the bolt-actions are all adequate for American big-game, other than gnarly Grizzlies.
I'd suggest you get the SKS and a Remington 700 BDL in .308...because you can have the plinker AND you can have an accurate/powerful bolt-action that can use match ammo for target practice or "enhanced" ammo for hunting.
An alternative to the 700 BDL would be the Model 7, also in .308.
If you intend to get a MORE powerful rifle in the future, jump up in bullet diameter to .338 and you'll have the 3 rifles covered.
I remember going through my 1st rifle agony. My 1st rifle was an SKS Paratrooper, which I stupidly traded off. I wish I had that one back.
Then, I had to have my 1st HUNTING rifle...
I really went bananas trying to decide between the Winchester Model 70 with controlled round feed and the Remington 700 with the push feed and the caliber selection of .308/.30-06/.300 Win.Mag., etc.
I ended up walking into a Big5 and on the wall was a 1989 Remington 700 BDL-AS(aralon synthetic stock) in 7MM Rem.Mag., all matte black and in this stock that had a greenish-grey hue to it...SOLD! Problem solved. Great caliber. Great Rifle. Never regretted it and I'll not sell this one. My wife was ecstatic that I FINALLY got something and quit talking about it!
If the Winchester you showed us is what YOU want, go get it! Stop getting more advice at this time, and GO GET YOURSELF A RIFLE. PERIOD.
Good Luck, Amigo.