FWIW, I use all Leupolds on all my rifles, which are either M70s or Sako A series; currently all of them wear Leupolds of some flavor, usually VXIIIs - have never saw a need to buy a different brand.
Remington m7 AWR in 7mm SAUM wears a Leica 2.5-10x42. Pre-64 M70 in .300 H&H also wears a Leica 2.5-10x42 Montana 99 in .375 H&H also wears a Leica as well, only with the #1 ret.