I've just downloaded TestMatrix for trial, I used it once a long while back and it showed promise. I like the idea of adding coverage and profiling to VS 2010 Pro but at the moment I can't activate the line level profiling.
I have found the profiler thanks to this post http://community.submain.com/forums/permalink/1983/1985/ShowThread.aspx#1985
I've enabled "Collect line level coverage data while you test" and I can see line level coverage information but I'm not seeing line level profiling information as suggested by the web site.
"As with code coverage, feedback appears directly in the Visual Studio's editor, in the form of hot spots markers and timing bars."
How do I enable this capability?