In the 60's, Redfield was THE scope. I know they were bought out and the quality declined dramatically as they tried to live off the name (ala Black & Decker). I think they've gotten back to making decent stuff, but not sure.
It is my understanding that Weaver's parent company bought out B&L. The new Weavers have the same series numbers and physically look like my B&L's. If they are the same, they're excellent.
When I was shopping for a scope for my .357 Herrett Contender, I was looking a Leo's, Burris, etc. Guy in a local shop that shoots Contenders in competition said the Weaver was flat out the best. I got one in 2.5x8 and so far it looks really good. Contenders have significant recoil, so it speaks highly if it indeed holds up.
Another brand that I think gets overlooked is Burris. Supposedly the internals are brass where Leupold uses plastic. I have a Burris Black Diamond on my 25-06 and it's optics are excellent, better than my VX-III's IMO.