I had the original black one for the 5 and it was a complete nightmare.
Decided to give them one more chance and picked up a blue. Vast improvement but still far from perfect. The screen protector is just cheap and usually has Newton rings, and still hinders touch sensitivity, though not as bad as the first batch.
Apple OEM headphones are the only ones that can be used without the headphone adaptor. As someone who listens to music a lot I find it annoying.
The new batch is improved but not perfect