I just purchased a touchstone and thought I's share some opinion. I've been looking/waiting for a good case because this little booger is so darn slick and hard to hold on to. I just knew, it was only a matter of time, before I dropped my pre. Not maybe, but when.

I just put the back cover on for the touchstone and this thing is great. The matte finish not only looks good, but makes the pre much easier to handle.

If you are looking for that little extra grip and don't want to add the bulk of a case or the expense of a touchstone, try getting just the back for 20 bucks.

Then, later, you could buy just the touchstone itself after using the back for a while alone.

Just my opinion, hope this helps!