Dewalt Flex-volt tools

Ok, been thinking of making a transition from Dewalt XRP to 20volt system. It's a fair amount of clams to do a trade out so I was dragging my feet. I needed a cordless grinder and ordered the 20 volt one. While it was shipping I read a review of flexvolt returned the 20 volt grinder and purchased the flex grinder. Hopefully I made a good decision. Anyone using the flex tools and if so, were they worth the cost? I checked out the flex saws all at HD and it's a beast, weighs more than my Milwaukee corded one.

Dewalt Flex-volt tools