I have two BR-36's which I've owned for ±20 years and one T36 which I've had for 4. What I've found: as the scopes age it's easier to still adjust the Parallax on the Weaver, but with the Leupolds they seem to hold their old settings when trying to dial in a new one. When new they were all great, but with time, and trips back to the factory, the Leupolds needed several shots (sometimes dozens) before a different parallax setting would dial in. Of course, if you're going to shoot at just one distance, this wouldn't be an issue. Except, problem there would be, I use to find when shooting rimfire at 50 I would make a fine parallax adjustment between when shooting in the A.M. and P.M. due to the suns angle change, or if it switched from being overcast to sunny, or visa versa, during a match.
I used to only shoot rimfire at 50Y/M with the Leupolds, but when I started shooting Airguns I added the Weaver and have that on the one gun I shoot both 25Y/M and 50Y with for just this reason. Both brands are equal when it comes to Tracking and POI, so what ShevyII said above would make a whole lot of difference in my book. It may not seem like a big deal to not have a warranty, that is right up until you have a problem and your $300.00 scope just became not worth fixing.
If it were me, I'd buy a NEW T-36 for $400.00 knowing I would 1.) have a brand new scope, and 2.) have a warranty for as long as I owned it, so no worries.
Dave Shattuck