2-bay unit
“Western Digital is obviously a big vendor with end-user support appropriate even for non-tech savvy folks. Coupled with the plug-and-play experience, this makes it an ideal purchase for anyone who is looking to get started with network attached storage and needs basic data protection”

2-bay unit
“Power users wanting to experiment with btrfs and needing a more full-featured COTS NAS OS need to look no further than Synology’s DSM 6.0”

4-bay unit
“The main attraction here is the price – $220 for four bays is approximately the same as what the [LenovoEMC] ix4-300d used to cost when it was in the market. However, the NAS540 has double the RAM (1GB DDR3) of the ix4-300d. It also supports hot-swapping of the drives, unlike the ix4-300d”

4-bay unit
“QNAP’s QTS is very rich in features (both mobile apps and the NAS apps ecosystem), and is perfect for power users”

8-bay unit
“The TVS-x71 units are meant for the high-end SMB market, but, in our evaluation of a TVS-871T-i7-16G unit over the last several months …, we can say that it is positively drool-worthy for the high-end power users with cash to burn”

4-bay unit (honourable mention)
“Coupled with the newly introduced Netgear Nighthawk X8 R8500 tri-band 4×4 802.11ac router and the promise of plug-and-play link aggregation support, it presents a compelling solution for consumers in the market for a router as well as a NAS”