Synology DiskStation DS1512+. It blew away the competition in all of the reviews. This is a 5 Bay, dual Nic, dual fan NAS drive on steroids. So far, a few months in, it's beaten my expectations hands down. This was a good investment. It will allow for growth as well as provide everything that I need and more in the mean time. It's interface is via a web page and it basically looks like a desktop. Here's a snapshot:
I filled it with 3, Seagate Barracuda 7200RPM, 2 TB drives in a RAID 5 config for redundancy, that gives me 4 TB of usable space, AND 2 open bays for future expansion. The nice thing about this device is that you can connect an additional 2, 5-Bay arrays to just keep expanding your current array if the need arises. Those bay only add-ons are a fraction of the cost of the main system.
The main features I'm currently using are obviously a file share, for storage of images and other data, an FTP Server for submissions to media outlets, the Media Server so I can stream videos, photos and music across my local home network and basic AntiVirus. There are so many more options I can install down the road if I have the need, like an OpenERP solution, Surveillance Station, Mail Server, VPN Server, Syslog Server, Auto backup and the list goes on and on.
If you have any questions about it, feel free to ping me. I'd be happy to point you in the right direction. My old 1 TB NAS drive will now be living across the country and has been setup with a scheduled backup so that my really important data is not only backed up, but also geographically separated. Basic disaster recovery. Bad things do happen, and this is a little insurance to guard against that. The base system (Synology DS 1512+) with drives (Seagate 2 TB) was just over $1,100, but after getting it and migrating my data to it, it's well worth the investment.