Build .29 is way better that the original .0
On my 950 XL it looks much more stable, no crashes so far, it was rebooting once or twice a day until yesterday; no sudden drop of calls when using Bluetooth; the phone is much cooler than it was on the previous build and the battery bar has only gone down to 81% in 5 hours of regular usage, phone calls, a few app updates, email, Band 2 always connected and the car radio system connected and playing streamed music during my commute to work, Flipboard and News reading during breakfast (not healthy, I know), etc. Until yesterday I would be looking for a USB cable by now.