I found the shafts of the Zero Friction tees get "soft" after a few shots and are sometimes hard, if not impossible, to insert into the ground on a hard tee box.

I also found that I occasionally break the "tines" off the Zero Friction tee.

In windy weather (very common here) I found the ball will sometimes blow off the tee or rock around a bit during address.

For these reasons I tried Epoch tees based on a recommendation from a friend and am extremely happy with them. Unless they start breaking I can't see playing any other tees from now on. I also love the 1-1/2" tees for irons, hybrids and fairway woods.

I was really looking for a comparison between Stinger and Epoch. Have you, or will you do a comparison between the two?

I use Stinger tees much more often. I have tried Epoch. However I remember in the old days (like the 1960's) a company came out with plastic tees. Everyone started using them because they wouldn't break. The first thing I noticed was the drag on the driver because the tee wouldn't break. The second thing I noticed was the marks left on the driver face, again because the tee's wouldn't break. I would rather have the tees break and not have that drag on the driver. Admitted the stinger tees have a smaller head and you have to be more careful during the setup, but in the long run there would be less damage to your driver, and they perform the same (less interference on ball flight).

One of your respondents asked about a comparison between the epoch and the Stinger. The epoch is much easier to tee up than the Stinger of the ZF.

http://www.stingertees.com/