Lots of good suggestions here!

I just mentioned the label Sub Rosa in another post. They have a lot of varied options from across the sonic spectrum, including Univers Zero.

Someone else mentioned Mogwai, they are releasing anew album soon so that is exciting. The lead single has vocals.

I really like Birdsongs of the Mesozoic; they are on Cuneiform Records.

There are also younger groups getting on the stage! Plutato is pretty great free-form action without much in vocals.