I find T5 kind of boring personally, because it's so incredibly common :P
Really, take a lap through SW/Org/Shrine on a decently populated server and you'll see at least 3 priests wearing it.
I personally like to create my own "sets" around an armorpiece or two that i like (chest/shoulders typically).
Here's a list of my current favorite self-made, non-set transmogs (not posting full images). They have all been posted before in this thread.
http://i56.servimg.com/u/f56/12/51/00/69/wowscr14.jpg
http://i56.servimg.com/u/f56/12/51/00/69/silksa11.jpg
http://i56.servimg.com/u/f56/12/51/00/69/someth11.jpg
http://i41.servimg.com/u/f41/12/51/00/69/transm11.jpg
... and the pvp helm/shoulder one a few posts above.