I've only had them a couple weeks but am very impressed with the sound.
They are in my backyard and can really fill the area with sound!
I had been looking for outdoor speakers for some time and had done a lot of research online. I thought I knew what kind of speakers I wanted for the price I was willing to spend but then I went and listened to a bunch of speakers they had hooked up side-by-side at a Best Buy, I was shocked at what I heard! The other speakers ALL sounded tinny and small. It was amazing how much deeper and fuller the bass was on the KHOs. After listening, I couldn't bring myself to buy any other speakers, even though these were more $$ than I wanted to spend.
As long as they last, I'll be very satisfied with them.