Zcash difficulty. Still worth mining?

Hi all,

I stopped mining ZEC around six month ago but I've noticed the value has risen greatly recently and I'm just wondering if Zcash is still worth mining?
What is the difficulty like now?
What kind of power would I need on a rig to be bringing in a decent amount of ZEC daily?
How much are others managing to mine daily and what is the power of your rigs?

You can use the calculator at https://whattomine.com to see how much you could earn based on your hashrate.