I also own the TCC board, and this is much better. I bought it because it interacts with the watch making a truly spectacular showing. It is intuitive, is very clear and fast. I love that it holds in memory what was written in case of an emergency and you lose bluetooth contact, but this has never happened to me.
Other companies are now making assories for this too, which shows you how good it it. I use it with the Peeker, the watch and my phone. I love that it can also display on an Apple watc...