I just bought a set of federal mogul 'sealed power' E-245 K60 for my 292,(slowly-but-slowly ) I'm getting all the parts together.
But I'll do good to see 300 hp with this build,so they may be ok for a mild smallblock,CR will be around 9:1 and it's an occasional street vehicle.
If your running high CR and/or high HP then get the best.
As a matter of fact my machine shop won't hone for 'cast' rings because of all the junk on the market.He said 'good moly rings'.
But,,,the rings(no matter the cost) will work in the more important area than rings,,,,thats the bore.If it ain't straight/round/proper honed then the rings can't work right,but that wouldn't justify using cheap rings,just my 2 cents worth.