I’m wondering what is considered to be the best build or builds this season for single target dps. For example killing the rift guardian quickly.
I would suggest the Impale DH using the Shadows Mantle set. Icy Veins is a good place to start for guides on the build.
It has a lot of versatility for a boss killer, but is by no means lacking in power.
Also very fun to play, with some good alternatives for speed farming.