The faucets tied to coinpot are kinda nice- decent referral payouts, plus they have a daily loyalty bonus that you can increase by 1% per day up to 100% if you tap it a least once a day. It has a randomize bonus, and it has a 1%-per-active referral payout.

What I like about these is that they have a faucet that continuously pays out. Per the site:

Whereas most faucets only allow you to claim once per hour or once per day, we allow you to claim as often or as little as you like*
The faucet will gradually fill up - quite quickly initially but it will slow down over time - until you make a claim. So the longer you leave it the more you will be able to claim.
You may prefer to claim a smaller amount every 5 minutes, or visit once per day and claim the large amount that has built up while you were away!

I like them for this reason. For BTC, the once-every-15 minute faucets pay out a bit better, but ultimately it comes down to personal preference.

The bitcoin faucet now has a function that enables you to use extra CPU from your computer to go work on the mining pool they're a part of (or running themselves) and get a bonus based on that.