O'Reilly Antifreeze?

Has anyone had any experience with O'Reilly Auto Parts' brand of Antifreeze? The store clerk (of course) says it's better than Dex-Cool, will mix with any other antifreeze and lasts for 50,000 miles/5 years. Naturally the clincher is the price at about $3 per gallon cheaper than Dex-Cool.

Is this stuff likely to cause heartburn in my '98 Z71 5.7L engine?

Thanks