I have the Sig, my pard has a Vortex (model lower). They both work fine, but I prefer the reticle in Sig, color has a bit green/blue hue, but seems clearer than Vortex. If u had the choice, I'd get the Sig again.
Like Alamo stated, whats your intended use? I'm starting to get into thr market for one, and the rabbit hole is deep. So far, what I've learned is you get what you pay for, and buy once, cry once.
I've owned both 5R and T3 Tactical (8 twist 20"). Tikka was more aaccurate with 40-69gr bullets, shot cheap 55gr bulklreloads better and is lighter. So, down the road the Remmy went. Don't get me wrong, it was still a great gun, but the Teeker did what I wanted in a smaller package.