LNR400 is a good NVR for beginners (deal allot with Lorex and they are a not bad company, cx service is meh but tech support is amazing).
With that said, for the money you would be better getting something like the LHV2000, its a cheaper system also at 1080P. but its a BNC DVR not an NVR.
The only real - is less settings on the camera (cameras are plug and play for example with no real set up or ability to set up complicated software things which will probably just confuse and over complicate things anyways).
NOW
if you are working with a large building with an already established IP (RJ45, otherwise known as Ethernet cable) an NVR is a good choice because you do not need to run your lines all the way back to your system and you can just patch it into the nearest drop point (with use of POE switch or rj45 power injectors.
I would only recommend the LHV2000 because the LHV1000 is 720P and very limited on cameras while the LHV2000 is 1080P and you can use 960H cameras if you really wanted to.
I will admit I only work with Lorex/Flir products so I cannot speak to anything else but if you need help their tech support is life time so theirs that.
*Note currently only Costco sells the LHV2000 but if you have a membership its worth a look(same price point 4 more cameras with capability of up to 16 cameras)*
http://www.costco.ca/Lorex%C2%AE-16-channel-1080p-DVR-Surveillance-System-with-2-TB-HDD-and-8-1080p-Bullet-Cameras.product.100225924.html
What ever you do as nice as wireless cameras look DONT. Wireless is crap if you want it to actually be reliable nothing beats a solid wire.