I ordered these for my dining room.  The curtains were for 2 side-by-side windows about 73" across in total.  I wanted the curtains to be on the outside edge of each window.   I started out with just 2 panels and then ordered another pack (there are 2 panels/pack) for more fullness.  The extra fullness made the difference.  I am very pleased with the purchase and the curtains are beautiful!

Pros: Easy to iron, great value, hang nicely from curtain rod, 
Cons: None