I'm also looking for a new drip tray scale. I've got a simple cheap one I use for weighing my beans, but would like something waterproof for on the drip tray. What the Acaia and Brewista scales add in terms of functionality is mainly the shot timer, right? That seems useful, although I'm not sure how much money it's really worth. Does anyone know of other precision scales that include a stopwatch or shot timer functionality (I clicked on the links in the other posts but don't think any of those scales offer that functionality).
O, by the way, I think I read something about Brewista coming out with a new model later this year or early 2017. Like the Acaia it's pretty much out of stock everywhere at the moment.