I've been a long time user of ZFS on linux. It's got some superb features, but a lot of them are heavily aimed at servers with lots of ram and even the ability

I've been a long time user of ZFS on linux. It's got some superb features, but a lot of them are heavily aimed at servers with lots of ram and even the ability to setup SSD scratch disks for caching. Not saying that you can't use it on a laptop, you can, but you have to be very careful with features like dedup, lest you bring your system to it's knees. One of the other limitations was native encryption (you could put it inside a LUKS container, but it was an additional hassle), but that was finally solved in May of this year.