Not a brand, but a design style. Make sure you get rings that have screws on both sides of the scope. Some styles have a "hinge" on one side and only tighten on the opposite side. The problem with those is that, as you tighten, the scope rotates.
I got rings for my .30-06 at Kaneohe Gun Shop for about $20. I don't remember the brand name, but the upper band for each ring was actually 2 bands. So, instead of having 2 strips of wide ring over my scope, I actually have 2 pairs of narrow ring. So far, no issues with slippage after many rounds of M2 ball.
They look like
this, but I think mine are steel.
You can also wait for the next gun show. I've picked up several sets of rings for around $5 each there. Heck, come to think of it, I probably have 3 or 4 sets taking up space in a drawer somewhere.