I've tried three different brands and they all had their own sonic signature and each brand sounded better in one direction over the other.
There was a money back guarantee on all brands and all it cost was the price of shipping if I didn't keep them. I've returned things before that didn't impress me and they were more of a hassle to ship than a few fuses. They work, and if you haven't tried them, your opinion of them is not objective.
All the best,
Nonoise