I've been using zpool for months with consistent daily payments.  It's very reliable.

Most of the instances I've seen of people complaining about them, simply didn't understand how the pool works.  Ask questions if you are unsure how things are working.

MiningPoolHub also has skein and can auto exchange to BTC.  It works differently than zpool since you point to your account and then configure things on their website to enable auto exchange and set your wallets.