[Help] How to choose a best pool ?

[jezz]

I mining differents altcoins. (Doge/moon and smartcoin soon)
But when i want choose my pool i don't know what i must look to have best result.

I know have many informatins : Pool Hash Rate, Pool Efficiency, Current Active Workers ...
But i don't know what is most important.

If you can explain me how you choose your pools.
(if it's important my hashrate : 880kh/s)

Thanks