If you're looking for a mixed wall, Dusknoir can do a pretty good job of it, although most times it's better to make it Specially defensive, and then just add WoW to calm physical attackers, but Pain Split may be too ineffective for your liking as the only recovery move. Still, base 100 ATK is good for something that learns a STAB priority move, all elemental punches, and Focus punch. (and trick room)
Uxie is a worse cresselia in most regards, although 75/130/130 defenses with 95 speed ain't half bad, considering it can T-wave, U-turn, set up Rocks AND trick room. While Cresselia only does 1/4th of those things, what you'll find is it isn't so much a mixed wall as an all-around support pixie, with a lack of (reliable) recovery.
Spiritomb falls into the same category. While its immunities and Defenses can seem appealing to dual-wall, it shouldn't be used for that purpose alone. Getting STAB Pursuit/Sucker Punch, Hypnosis/Wow, Taunt, and then even the capability to use Nasty Plot and Dark Pulse is too good to pass up. Still, you'll find yourself relying on Pain Split for recovery.
Spiritomb's close, but my vote is go with the Self-sustaining Battleduck. Bronzong seems to be all wall, no bite, while Cresselia can not only wall, but can strike back against many common threats (Specsmence, Mixmence in the absence of Crunch, Garchomp, Gyarados, and to a lesser extent, Infernape) while still chargin' her special attack that can lead to a stalemate, and then an eventual win over Standard Blissey, with some luck. (with enough investment, Ice Beam becomes a surefire 3HKO iirc, that coupled with SS and a lucky freeze/ch can overcome the whore, while you LOL at its Tossing with your 444 HP.) The optimal recovery now seems to be RestTalk, but if that puts you off, try Moonlighting. While it allows a good 50% and some more diversity, SS teams will give you a hard time when it comes to 33%.
It comes down to preference. Bronzong will give you a lot of opportunities to set up whatever support/combos you wish to execute, Spiritomb/Dusknoir can make your opponent pull their hair out if they aren't prepared, what with their support/offensive options, and Pressure. Cresselia, however, just may make your opponents eat that hair.