Since becoming transponder equipped in the Cherokee and Cirrus I have gotten flight following on multiple occasions with no issues. Twice I have circumnavigate the Wichita Class C which makes for a nice 200km triangle. I have also received radar service from Longview Approach on the big downwind flight, Nashville Approach on a flight out of Tullahoma to the north, and from Fort Worth Center on the Diamond Climb.

I do talk to ATC multiple times a day during my day job of being a CFI so i'm pretty comfortable taking advantage of the services available. It is sometimes very nice to be able to use the airspace available to us.