I've had no issues with any of the Arsenals I own/owned over the years and all but the most current had high round counts +/- 15k+ rounds.
IF I was going to stamp a rifle, my criteria requires it to be 100% as combloc as possible. Which would mean a SLR104/variant, SLR105, SGL31/variant. I'd also have no issues doing so with a build from Turbo, In Range, CW, etc... as long as a OEM kit/barrel was used.
Have you shot a krinkov? Had the luxury of getting quite a bit of trigger time on one and (much like AR's) I think the barrel sweet spot for a .22 round is 11.5-12.5". Just $0.02
That said, @nictra @tx-zen convinced me that the 105 platform is the sweet spot for a 5.45 carbine and made my choice to go that route for the 5.45 SBR.
The PSA Krink looks very promising and I will get one, but wouldn't bet the farm on something that has "hope to be on market by q4" based on PSA's "dates" with other platforms. I'd rather have it today than hope to have it tomorrow.
The RD guns are sweet, but for $2k you could source a 5.45 Saiga, GBC-13, and send it off to get converted with cut/perm'd muzzle device of your choice.
You have a lot of options if you are not in a rush make it a project and make what you want! I'd say if a krink is the goal I'd source a SLR-104ur, Eform1, 45 days later cut the barrel.