Skip on the T3's and order some of these:
Innokin I6 Dual Coil Clearomizer
In fact order several, i have two and i wish i had 10 more. They come apart from the bottom like T3's to clean but also the tip screws off to fill. They have replaceable coil heads.
One tip.. unscrew the bottom to remove the coil assembly cut the wicks down to 1/4" from the coil, untwist the wicks, fluff, then reassemble. Fill from the top.
The reason for trimming the wicks back is that they are long and there are 4 of them (dual coil), they take up quite a bit of room inside so trimming allows more juice to be added.
I am rocking mine on a stock eGo 1100 mah and they are fog machines. They hold less juice than the kangers but that is a good compromise for how well they work.