Xperl health not updating
My addons of preference are X-Perl Unit Frames and Grid.
Both are highly customizable and can show you a lot of information in a very neat little package.
You can also set the orientation of your frames, either vertical (what I have) or horizontal. Layout Use Layout to specify the size and shape of your frames.
I display mine as small boxes, so my frames take up as little room as possible.
X-Perl Unit Frames is what I use for self, focus, target and target-of-target frames.