Win88.me faucet is the best.
It maybe sounds strange to most but that's true, you can have much more satoshis with the inside win88 / primedice faucets than with faucets websites.
win88.me is paying 2000 satoshis per 60 seconds. While primedice is paying 500 satoshis every 120 seconds. But the higher your level the more satoshis you get from the faucet.
AFAIK, you can only claim the faucets every 180 seconds for both win88 and PD.
Also, win88 has a min cashout level of 0.01 btc while PD's min cashout is 0.0005