Pros: Lightweight panels with clean crisp pattern edges. Cuts and installs very easy. I recommend a good tube of power grab adhesive that is designed for ceilings (approx. $3.50 a tube). You want those tiles to hold tight and very quickly so that you aren't having to hold the tiles up until the adhesive takes hold. They take latex paint nicely. I installed approx. 100 tiles in a few hours. My ceiling looks so much better now. Will be ordering more to do another room. Would probable do a few more rooms but at $300 a room it gets a bit spendy.
Cons: You have to exercise a little caution with using a straight edge for cutting. If you are not careful then you will leave dents in the Styrofoam tiles. I also feel the price is a little much for the product. I think $2.00 would be a much more reasonable price.