I went through exactly what you're doing. I needed a scope for a Rock River LAR-8 (.308) and I wanted the same thing you do - a good quality scope. I already knew pretty much what I wanted, so I compared 2 scopes, side by side on the same trip to the range.
One was a Leupold Mark 4, 8.5-25X, M1, illuminated reticle and the other was a Vortex (can't remember the model but it was NOT their top of the line) with a max magnification of 16X. It is noteworthy that the Vortex was just over half the price of the Leupold. Both scopes look and feel like they're really nice quality instruments.
I did the "box test" with both scopes. Both performed excellently and returned to the initial point of impact very well. I had no issues with the turrets on either scope. Both were bright and clear. I noted one thing about the Leupold that I liked better than the Vortex, and I've verified that it is also a factor with their other scopes I've looked at....
I've found that (in my opinion) the eye relief is more forgiving on the Leupold. It's not quite so critical that the scope is mounted EXACTLY where you need it to be in order to get a full-field-view through the eyepiece. With the Vortex, it seemed as if your eye had very little front-to-rear movement available while still getting the full picture. The Leupold wasn't so critical in that regard and I found it nicer to use because of that. I could get a little more comfortable behind the Leupold because I could move around a little more.
All that being said, at just over half the cost of the Leupold, the Vortex is one heckuva scope for the money. I know from personal experience that their warranty is just as good as Leupold's so that's no factor in the decision. If I was "pinching my pennies" as they say, I would not hesitate to get a Vortex and I know I'd be happy with it. In my particular case I was able to get what I had wanted for a long, long time, and I bought the Leupold Mark 4. It's just a personal thing... I have almost all Leupold scopes with the exception of one Zeiss.... and one Vortex on a .17HMR.
A friend has a Vortex Razor front focal plane scope and he really likes it a lot - there's not much NOT to like about it. I think you'll be good with either scope. With the Leupold, you're going to be paying a bit for the name, but you also get an excellent scope out of it.
Edit! - Vortex has a cool deal that not many people know about. It's a law enforcement OR military (active AND retired!) discount.... 30% OFF MSRP if you order it directly from Vortex. You have to prove your status with a copy of a DD-214 technically, but usually a photocopy of your military ID will suffice. It's a good deal and usually works out to be somewhat less than you can find the same scope online for. To get this deal, find a phone number or email address on their web site and contact them directly.