I've tried A LOT of controller combos, but I actually never tried anything ***/TA on a troller. I think the reason why though is because one of my main toons was a TA/Archery defender..so I knew what TA did and didn't wanna pair it with anything on a controller.
Some of my favorite combos...aside form earth/kin are:
Illusion/Rad: I originally had this toon way back in Issue 4...and it's primary use was for the Pre Issue 9 Hami raids (Was a devoted member of the drop team). After Hami changes I discovered that this toon was a great TF toon. Me and 2 other Ill/Rads used to trio STF all the time...was a lot of fun.
Fire/Kin: This was my first farmer...like most people before AE
I still used my fire/kin after AE to farm friends mainly who wanted to actually play their toons as they leveled up instead of sitting inside an AE entrance.
Mind/Emp: This was my support toon. I took the single target hold, aoe hold, levitate, and confuse...as well as the emp powers. I found the Mind powers to be a great addition at assisting teammates.
While I love trollers... my main AT I played was... Defenders and after Going Rogue.. Corruptors. I like Corruptors more, but always hated playing redside.