Do you have a Dell XPS 13 (any version)? Because I do (a 9343), and I don't have any of the problems you listed above - in fact, I spend far less time managing my laptop since I switched to Ubuntu. I started off with 14.04 then switched to 16.04 and I upgraded to an 4.9 LTS kernel in January. That's about it.

I have no issues with battery life, wifi, or BT or anything else. The first ~6 months of 2014 was a rough ride, because the hardware was so new there was no proper support for it in the kernel, but the team @ Dell managed to upstream all the required stuff, so depending on their custom Ubuntu release is no longer necessary. Everything should just work out of the box.