The original Amani War Bear, also I'm a big fan of protodrakes: the ulduar 25 protdrake has the best color combination imo. I use the timelost one tho - my favorite. rare, more rare, timelost (alot of time lost :/)!
For ground, Crusader's Black/White Warhorse together with Swift Alliance Steed (because of it's unique armor colors and pattern)
For flight, definitely Mimiron's Head. Unqiue in too many ways, but I'd say that Onyxian Drake comes very close
---------- Post added 2013-03-21 at 11:14 PM ----------
Last edited by ExtremeActionTess; 2013-03-21 at 10:17 PM.
My favourites are the Pureblood and T14 Meta (Heavenly I think it's called from the top of my head). I pretty much only use the heavenly now though, I like to feel like a special snowflake - even if only for a tier or so
---------- Post added 2013-03-22 at 03:09 AM ----------
Of the ones I have, probably Onyxian Drake. Of the ones on my wishlist, definitely Invincible.
Swift Zulian and Spectral Tiger, no competition
I'm a fan of the thundering cloud serpent, though the frost wyrms have always been a favorite as well. For ground mounts, I like the spectral wolf a lot, as well as the sunreaver hawkstrider (on my blood elf at least).
(Rareness does not affect how much I like something, and I cannot comprehend the concept of personally liking something more because it's rare. )
My blue and rusted proto-drakes are my favorite mounts if they were ground mounts as well as flying mounts I'd be in heaven.
Still rocking my Flametalon of Alysrazor as my ground mount.
Flying mount, usually Ashes of Alar still.
My favorite ones are TCG mounts: rhino and red nether rocket. Neither of them are rare anymore because of excessive duping, but I don't care about rareness. They just look awesome.
From raid mounts I sometimes use Plagued proto-drake and original ZA bear.
The reason Stormwind park was completely destroyed was because the night elves there had the audacity to tell Khadgar that Boomkins are superior to Mages in every way. Deathwing just happened to be flying by.
If the Ultramarine Battletank counts, it's probably that. Otherwise, it'd be the Pureblood Firehawk.