Your modern engine was designed for the Dex cool , and it would be a good idea to continue using it. Many of the "issues" blamed on Dex Cool in the past are actually rooted in other areas such as poor maintenance, air infiltration into the cooling system, and poor materials used for the gaskets to name a few. There is a story about why continuing the use of Dex Cool is recommended on the basis that other coolants may harm certain engine parts. You can read more about it here:
http://free-auto-repair-advice.blogs...label/Dex-Cool .
I'd be wary of some of the other coolants on the market labeled as "for every model". Some may not have the proper protection package, or enough of it. I've continued to run Dex Cool in my GM vehicles that came from the factory with it and have not had any major issues. It's what is the recommended coolant. Trying to save some money by using a cheaper coolant can end up costing more "down the road."