I have been using ZoL for quite a while now. Its a very mature project and much more stable than Btrfs. Order of magnitude difference in stability. And sequential transfer speed is close to platter. Random access speed is better than Btrfs/ext4.
I see no reason for not using ZoL. You need kernel sources for the kernel you are running, build a set of modules & utilities (./configure && make && make install kinda) and modprobe the modules and you are in business. Many usable distros already have packages which do all this for you. I personally use Gentoo and its the easiest to get ZoL on.