[ALUG] NAS

OK, so in my quest to simplify things,  I'm going to eventually do-away with my server. Can anyone recommend a NAS? Old me would probably have rolled-my-own with FreeNas or similar, but perhaps I need to go "of-the-shelf". Should I get RAID, or not bother?  My fileserver is RAIDed (mirrored). Any thoughts? Cheers Steve