I purchased one of these basic kits a couple of months ago, and they work ok, I got the 8 camera kit for R2k, if you want I can send you the info of the dude that sells them, he is quite decent and backs up his products.
I haven't finished setting it up, I tend to procrastinate.
The image is ok, neither here nor there, always possible to get better cameras, at night the LED are quite weak but I have the cameras near spot lights but if I didn't they would be useless at night.
The DVR does come with motion sensor, sending alerts and all that, but as soon as it got to the various technical aspects I fell asleep, but it has various features, you can show the pictures split screen, or slide show, set times when and how to record. Having 8 sets of wires ending up at the TV was a bit of a mission, a lot of cable around the house...I should actually finish setting this up.