I've owned the car now for 6 years and.

I've owned the car now for 6 years and personally I've put aprox 100,000 miles on it. Twice I've had the head gaskets and manifold gaskets replaced. One of those times I did the manifold gasket myself.
Once again my lower intake manifold gasket is leaking. I've read a lot on how this is a chronic issue with my make and model and how Dexcool seems to be a problem in my engine. I know I must replace the gasket again however this time when I do a coolant flush should I replace Dexcool with regular coolant? Is that safe. I highly dislike replacing my gaskets every 2 years as it is costly and takes aprox 6 hours for a shop to fix or if I do it myself it takes longs as I am not a certified mechanic. Also is there a specific gasket set that is recommended for my vehicle?