I am primarily a VTC miner and investor, but with difficulty way up I started looking for another new coin to start chasing after.
I love the piggy concept, its fun, the faucet graphics in progress look great, and I think its a cool idea to try and attract kids. With that being said, I started mining yesterday with:

https://pig.charityminingpools.com

I know its only been 24 hours and that is a small sample size, but so far, its been a great pool- no down time, easy to setup, etc. and we are finding blocks at a good rate.
(OK, I am now the one finding blocks, haha) As of this morning, I am the only miner! If you are not happy at another pool, come join me- they also donate to charity so that's an added bonus.