09 March 2016
I have this and also the older version of it. Both have been in regular use for many years now with no problems and no warping. The only downside is that they're not dishwasher safe, but they clean easily enough and a Brillo pad works well if they're really dirty. My old one has some scratches on it from my husband using a sharp knife on it (don't!), but it's still in use and it hasn't affected its performance. Very very useful.