Initially looking between the new Synology DS411+ and DS1511+, but a friend recommended QNAP, so I pulled up some random models around the same price (TS-509 PRO, TS-459, and TS-559 Pro+) - NewEgg Comparison Link
Also glanced at the Synology DS411j and DS410, but I'm not sure if one's an older model, or what the j stands for. I like ReadyNAS products as well, but when they got bought out by Netgear the prices skyrocketed. Not cool.
Features I'd like:
to be able to add HDDs at will (hot swappable would be nice as well)
Being able to host a web site (I think both Synology and QNAP do this)
Awesome that both Synology and QNAP products can provide storage for virtualization servers. That's really tempting, but I may or may not run VMs at home. It'd be nice, but I could always do that on local storage. In fact that may be preferred if I get some SSDs.
Not deal breakers:
bit torrent / NZB client built in (Synology only I believe)
So, does anyone have a preference between the two or any experiences / reviews they'd like to share, or other make / models they'd recommend?