I personally prefer SQL Diagnostic Manager (praying I don't get attacked from mentioning an Idera tool on here ;-)) - In my testing I liked the way the data was presented (charts, metrics, etc) and it comes with so many "neat" features (one of which is the ability to completely customize the layout of the dashboard and built custom metrics).

I know that's not really what you asked for in your post but thought I'd throw it out there in case you never had a chance to evaluate it