Well seeing as though you've alrewady done TA, i'd suggest Earth/Kin.
As a Speed boosted Animate Stone is pure quality, and once Fulcrum Shifted he can probably pack a hefty punch too.
Earth has a lot of Fire and Forget controls that can pretty much contol an entire mob in a single application of a single power, leaving you time to buff and debuff with your secondary.
I also hear Storm is great with Ice or Earth, as the -def and slows stack with either Ice inherent, or Quicksand etc.
Good Luck
I teamed with an earth/kin a long time ago ... great control but lousy for PvP (f that's your thing) because of something that may or may not be a bug.
Fire/Kin is insanely great, as is Fre/Rad (but a no go)... I think Fire/Storm would be good too, but probably very heavy on the end. I started one but then realised 3 fire controllers on one server was probably overkill 
Synaesthetix:if your mum wasn't already dead I would go kill her for bringing
you into the world
As said above, both Earth/Kin and Fire/Kin are great combinations.
Earth's powers contian a lot of -def, which will help your Kinetics hit more often.
Speed-Boosted, Fulcrum-Shifted Imps are really quite terrifying to behold. 
Just repeating here...
Yup, Fire/kin is the late game PvE damage king (or queen) if you have enough patience to get there. It's rather slow to level before imps unless you're in good teams, but once you have Tranference and Fulcrum, you get to be the new fire tank 
(admittedly a bit squishier).
I'm playing an Earth/kin now and I find that the extra control from the primary makes up for the lack of damage. Earth/storm is also a great combo, and having seen Shnyet's Earth/TA in action, that works very well too. Not a great fan of FF and I find sonic to be a bit under-par for controllers unless you have a regular team to level with or you really like a challenge. And empathy? Nah. Leave it to the defenders or the PvPers.
CoX 50s: <ill/rad> <ice/ice> <fire/kin> <grav/sonic> <ice/storm> <earth/kin> <kin/elec> <cold/psy> <thugs/dark> <fire/dark> <dark/elec> <night widow> <EM/ninj> <mind/icy>
[ QUOTE ]
I started one but then realised 3 fire controllers on one server was probably overkill
[/ QUOTE ]
hehe....that made me chuckle
...and to the OP....what Okton said.
SingStar:
"Extremists LOVE to fish to get us annoyed so we break the forum rules."
CRACK68:
"The origin of life wasn't planned either, should all life be declared a bug and wiped out?"
Lionsbane:
"You know me.Ever the realist"
It ommited what my intial thoughts were from my op but tbh 2 of the 3 builds have being mentioned many times byy you guys, those being Fire/Kin & Earth Kin.
The other idea I had was Earth/ Storm but on paper it looks like an Endurance Hog.
Any one tried a Earth/Storm?
I've never tried an Earth/Storm personally, but this guide on the US forums made me very tempted to give it a go
Four location AoEs!
EDIT: Not to mention that Earth/Storm is probably the most visually spectacular combination out there!
*cough* 3-4 threads down for Earth/Storm *cough*
Oh and Earth/TA gets 5 location AoE's 
(not including glue)
Yeah i noticed the thread below lol just reading it now
Earth/Storm is imo the best controller combo for sheer control.
Pros: You can control the world!!!
Cons: Pretty heavy on the end, no selfheal, little damage.
If you can get a friend to lvl a ?/kin with you theres no stopping you.
SingStar:
"Extremists LOVE to fish to get us annoyed so we break the forum rules."
CRACK68:
"The origin of life wasn't planned either, should all life be declared a bug and wiped out?"
Lionsbane:
"You know me.Ever the realist"
Ive a 42 Earth/Storm and I have to say that the control available is immense. Yes, you don't do a lot of damage and its probably not worth taking the heal.
In regards to end usage - no, I haven't found the end use to be overly considerable at all. Often, with the great controls at your disposal, its not necessary to throw everything at the mobs, but just use a couple of powers.
This for me, is a team build - not to say that it can't solo - but it will be slow, especially without the pet - who is insanely slow anyway
As a team build you are setting up the mobs to be destroyed and really - as an earth/storm - thats a piece of cake.
Personally, the only con is the lack of damage - but as a team build that shouldn't matter.
I run hasten on my earth/storm and she doesn't encounter any end issues beyond what I would expect. Certainly not excessive imo.
For solo or a small team I'd go Fire. For a toon for larger teams Earth.
Storm is a good choice to go with either. Hotfeet & Hurricane will clash with each other slightly but the imps will love Freezing Rain. And the AOE Immob & Tornado will work in either case too.
Fire / Trick Arrow would be good too for the stacked 45% dmg resist debuff. And the obvious Oil Slick synergy. But I think you've played TA defender already so maybe not?
Im going to be remaking Little Ms Marvellous shortly as I dont like her current defnder sets.
Im going to re-roll her as a controller and would like people suggestion on what best goes with
Earth Control
&
Fire Control
One further thing I dont want Rad as secondary as it wont fit the character at all.