Just checking for a misunderstanding - why do you specify 2.8 ohms?
Because I (and I think most people) find the Ego batteries tend to perform better with a lower resistance.
I like 1.8 to 2.0 personally (I, too have found kanger coils tend to run about .2 higher than the box says!) for my non-variable Egos.
That might be a little "too hot" a vape for some juice - but it's best for most of what I use...
Back to the clearomizers though - my favorites for Ego batteries are all Kangers!
I love the MiniProTank, and I like and use the EVOD and the T3-Mini, too.
They're all very similar in function...if you wanna try just one, I'd get an
EVOD. They're like $5, and come with a 2.4 ohm coil.