I can't give a 100% unbiased review, seeing as all I've owned have been older hand me down optics or cheap .22 plinker scopes. I have shot through high end Zeiss, Schmidt&Bender, and Nightforce optics while at the range and the only Vortex I own is a Vortex Viper PST 6-24x50. It's on a Savage 110ba in .338 Lapua Magnum.
Major reason I bought it? Features it has at it's price point. There's just some tiny things that this scope has at the $700 mark (when I bought it, dunno price now) that I wasn't finding until the much higher priced scopes. Raised magnification ring is one, it's not flat, quick pull back of your head and you can see what magnification you're on quick. Shim stop. Set of brass/copper shims you pop under your turret once you have it zeroed. Forget how many turns you've gone up? Turn it back down until the shims stop you, then just go back to the zero setting on your scope and you're back to where you started. Crude sounding but effective.
It's a very clear piece of glass too, at least in my opinion. Gathers light very well and has returned to zero each time I've used it at longer ranges.
Finally, last major pro of Vortex? Customer Service. When I was trying to find mine they were sold out everywhere so I wrote them direct to see if I could buy it direct from them (My only complaint about them honestly, had to go through a vendor) while I had them I asked a few questions with regards to the scopes, rings etc.
They answered everything and sent me manuals, reading materials and a few guide books on how to use it once I did get my hands on it.
Between the customer service and the clarity when I'm shooting with it, I'd, personally, look their way whenever I need a scope for something other then one of my knock around plinkers.