The Tundra Tracker kickstarter is starting in less than 24 hours. It is both 25% smaller and 25% lighter than the new Vive Tracker 3.0. It's battery life is about the same or greatre than the Vive Tracker 3.0. It's price is the same or less than than the Vive Tracker 2.0. The Tundra Tracker also supports connecting all of your trackers via a single dongle as opposed to require a dongle per tracker with the Vive trackers. For early backers on kickstarter you also get a carrying case, straps to attach them to your body, and usb cables which makes it an even better deal. The downside of course is having to wait since first units are expected to ship mid June.
https://twitter.com/Tundra_LabsI am kind of tempted to get the 5 trackers option so that I can have full body plus some extra trackers to play around with.