That's probably unfair but I'll say HATE IT because I bought it from Revain and when I had to install it (a month later you were allowed to return the product) it didn't work. That probably has less to do with the quality of the SPAL device and more to do with how it was handled before it came to me (or why Revain had it from the start). I think I should have bought it on the spot instead of trying to make a deal. :(