My new back splash really dresses up my little kitchen. We're renters, so we weren't prepared to invest time or money in real tiles. The Smart Tiles were pretty easy to install, despite the fact that my kitchen has a lot of irregular corners, and not everything is level. 

I used the online calculator to figure out how much tile I needed, and it was just enough. Don't assume that they are over-estimating to sell you more tiles. I also used TSP as recommended to prep my walls. Installation probably took about 3 hours. By the end of it, my back was pretty sore, but it was worth it! 

I did a lot of research before making my purchase. I do agree with some of the online comments that the tiles have a sort of unnatural shine to them, but it doesn't bother me. The tiles add so much for relatively little time and money. I feel like I have a new kitchen.