I've been an avid user of Pitbull unit frames for quite a while, but recently I switched to Shadowed Unit Frames (SUF).
Now, it's not that Pitbull was too complicated or something similar - the thing that made me switch was the rune display. Pitbull gives you this standalone bar with fancy rune graphics. That's nice and all, but when a rune is on cooldown it's fairly hard to see that in my opinion.
The way SUF displays your runes is a lot more minimalistic. I have three screenshots here, the first is the normal rune display with all runes (BBFFUU) up.
In the second, a few of my runes are on cooldown, you can notice this because of the lowered opacity and non-full bars. When the bar is full the rune is back up. You can easily tell I have one of each rune up.
In the last screenshot I show how Death runes are displayed: simply gray-colored bars. One FU pair has been converted to Death runes here.
Another feature of SUF I'm pretty happy with (and one that is also of use for my rogue) is the fact that you can anchor frames to eachother. For example, I have my Focus and Focus Target anchored to the top of my own unit frame.
This way, when I built the UI or when I want to rebuild it, I only have to move my own frame and the others follow automaticly. In Pitbull, you'd have to manually reposition every frame seperately.
Which unit frames do you use? Any particular reason why you choose those over the others available?
Life is Feudal MMO launching.
8 months ago