Replacing batteries with dual AGM

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Spring launch is here and considering replacing my 5 year old batteries. Currently have dual interstate 24M-XHD batteries with the ACR that came standard with my 2015 R5. Thinking of replacing both with new AGM batteries, Interstate 24M-AGM. Are there any concerns with this option? Also does anyone use or have thoughts on applying Permatex Dielectric Grease on new battery terminals? Thank you.