I received the 2-in-1 Silicone Sink Strainer and Stopper to try as a participant in the OXO Insider program and I could not be more pleased.  Now, I don't usually get excited about sink strainers, but I honestly had been looking for one for quite a while with no luck.  I have an older sink and the the generic metal strainers rarely fit, and when they did, they constantly slipped out of position, causing many plugged drains.  This strainer/stopper looks like it would fit a variety of sink sizes and the silicone edges create a good seal.  The little knob opens and closes the drain with ease.  If you are looking for a reliable and versatile sink strainer/stopper, this one is definitely worth a look.