I'd rate the Drenalin and Cardiac as a tie.
I like the Ross grip better
I shot a Gaurdian and didn't care for it, for me.

I got a Drenalin set up for me last night and shot about 20 arrows out of it.
Very nice bow.
I'll be taking my Cardiac to the woods this morning to try and get a Tom.
Maybe next week I'll use the Drenalin?