I like Platinum Shield of the Valorous
with the challenge mode set! As for one hand... I can't think of one atm.
While I look for a one hander though, you should really try using Wrathful Gladiator's Cloak of Victory
rather than hiding your cloak. Just a suggestion ;D
Also good news! In 5.2 we can transmog sword, axes, and maces to each other! That means you can use Abaddon
over that axe of yours!
Why not..... a lightsaber! Spellfire Longsword
Or a sawblade!... Gnomeregan Mindslicer
I personally like this one!
Oh also! In 5.2 the main hand/off hand restrictions for transmog will be removed. Runescribed Blade Fusion Blade Seethe
I'm a bit biased to swords.... look, why don't I do us both a favor and slide this little link in here:
That link lists every possible weapon transmog for pallies. It also has pages for every other class. Armor and weapons. Enjoy. The possibilities are.... limited by wow's loot tables o,0
Also a useful tool is wowhead's item comparison tool which also has a 3d model viewer.