Of course what this double cymbal stands provides, you can do with a regular stand and an extra expansion arm. 
However, I really liked the fact that this is a dedicated double cymbal stands, where both cymbal arms are the same distance from the center of the stand. 
 
I put my 22" ride and 18" crash, and have no problems. 
It doesn't look extra heavy, but it is very solid, and it doesn't give way to the weight. 
 
Pros: 
Great quality 
Very stable 
Great dedicated double cymbal desing 
 
Cons: 
None