Seagate's NAS Pro family has features and performance that are worth checking out.

Updated - ASUSTOR's AS7004T is a high-performance Intel i3 NAS with price to match.

QNAP's TS-x53 Pro NAS series shows what Intel's quad-core Bay Trail Celerons bring to the NAS performance party.

QNAP's Virtualization Station will have you running virtual machines like a pro in no time.

QNAP's TS-251 and TS451 are Bay Trail NASes that pack a performance punch, but will also wallop your wallet.

Synology's DSM 5.0 NAS OS delivers on its promise of real-time HD video transcoding, and much more.

Synology's DS415play is a high performance four-bay Evansport-based NAS.

Updated - Seagate's NAS 2-bay and 4-bay are big improvements over Seagate's past NASes.

Update -QNAP's QTS 4.1 offers tweaks on old features and new capabilities for both SOHO and business users, with emphasis on the latter.

Updated - ASUSTOR's ADM 2.1 OS provides a growing range of features, but lags behind competition in multimedia support.

Updated - QNAP's TS-470 Pro is powerful, but very pricey NAS even before you add its optional dual 10GbE card.

ASUSTOR's AS-30XT two and four-bay NASes have a good combination of price and performance.

NETGEAR's ReadyNAS RN716 is a pricey, but powerful NAS with built-in dual 10GbE ports.

Updated: ASUSTOR's AS-20XTE two and four-bay NASes have lower cost, but also lower performance.

TerraMaster's F2-NAS 2 Private Cloud Storage NAS has many features, but also many quirks.

Updated - Thecus' N7710-G is a surprisingly affordable 10GbE-equipped NAS.

ZyXEL's NSA320 2-Bay Power Media Server has all the features, but not the performance of higher-priced NSA325 sibling.

TRENDnet's TN-200 2-Bay NAS Media Server is better than you might expect for a $100 NAS

WD's My Cloud EX2 is packed with features but falls a bit short on performance.

ZyXEL's NSA325 v2 has a few minor physical and feature improvements over the original, but keeps the same hardware.