I use the paid version of Visual Studio and I still avoid MSTest like the plague. I used it for a couple of projects because I thought the integration would be great, but it's awful. It's really slow, even if you use it as a shell for NUnit/xUnit.

I use NUnit/xUnit, and sometimes mspec, and testing from the command line or the N/xUnit GUI is not an issue for me.

FYI, there are even attempts at getting continuous testing working via console, as soon as you save a file in VS the tests are kicked off in the console. I tried it and it "worked", but so far I haven't integrated it into my workflow yet.