I've owned these congas for over 9 years and they're still sounding (and looking) as good as they did the day I received them.
They produce a nice range of clean sounds and you can get a reasonable amount of volume out of them, I've accompanied several DJs on 0.5k PAs without amplification on the congas and have never been (totally) drowned out.
The stands are a bit of a pain to set up and tear down, but I can't think of a better way to support the congas without adding a big old wedge to the price. On the plus side, the stands don't leave any marks at all on the drums.
All in all, a nice piece of kit.