Enlarge (credit: Ars Technica) It's Wednesday, which means it's time for another Dealmaster. Our latest roundup of the best tech deals from around the web includes the Google Chromecast back down to $40 at various retailers. While we've seen this deal a handful of times this year, it's still $10 off Google's MSRP, making it another solid opportunity to save on what we consider the best 4K streaming stick for most people. Compared to competing devices from Amazon and Roku, we still find the Chromecast's interface to do a cleaner job of organizing and proactively recommending content you might want to watch.