Having multiple kits that require reduced volume, I've always gone with pads as a quick, cheap option, but I decided to spend a bit more with reduced volume heads and reduced volume cymbals, so I can include that as a future option if needed.
These cymbals will always draw comparisons to the more expensive Zildjian and Sabian versions, but I believe these are the better choice, unless money really is no concern.
The build quality is great, they're aesthetically pleasing, and the price is just too good to pass up, especially if you compare the price of the set compared to buying them individually.
In terms of sound, they're really quiet, (I tried them out at one in the morning with no problems!), and they should be played with good, balanced sticks; as the stick attack is almost as loud as the ring of the cymbal itself. They have a satisfying and complete sound. There are no real awkward overtones or nasty metallic buzzes, with the ride cymbal sounding particularly smooth, with the smaller cymbals being slightly more tinny.
The only stand out negative, are the logos. This is an issue on most Millennium/Zultan cymbals, even on the most expensive 'Zultan Heritage' range. They use some kind of ink and process that flakes off pretty easily, even without striking the logo with the sticks. The cymbals arrived with the logos looking slightly scuffed already, so don't expect the logos to last, even if you handle the cymbals carefully.
Overall, very happy!