I bought a four channel DVR and it wasn't that long after buying it did I regret not getting a 8 channel type.
Do yourself a favour and really think about where you want your cameras and whether a four channel type would be enough to suit your needs.
The four channel that I bought has the ability to fit two HD's of up to 2TB each. It will record all four channels in D1 (this is a must really) and each channel at 25fps. It will also stream to a mobile device (like android) at CIF - I find that useful. It has lots of other features and works really well. I paid around £85 for it from ebay.
I then bought this one....
http://www.ebay.co.uk/itm/181008118229?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
Thanks for the reply and thanks for the tip about D!. I didn't know about that before.What was the 8 channel one you bought as I can't seem to find an 8 channel that records all channels in D1. ,
I can see why you bought the 16 channel one as it looks really good value for money. Being 16 channel it looks like they have designed it to a higher specification that I cannot find an equivalent spec in an 8 channel. It might be better value to spend a few more quid and get a better machine, although my budget for the dvr was around 80-90 quid, without HDD,
I
...it arrived in a few days and works perfectly well.
It can support up to 16 channels and record each of then in full D1 at 25fps. I have a 2TB HD fitted to it.
The cameras I bought were 600TVL Sony one third sensor types with variable focus and zoom...
http://www.ebay.co.uk/itm/GTDBJ-OUT...-/190741500712?pt=UK_CCTV&hash=item2c69145328
I have since bought one of these....
http://www.ebay.co.uk/itm/300780858369?_trksid=p5197.c0.m619
and it arrived from china this morning and I have fitted it - it is very very good and well worth the money. In fact I have just ordered two more - you need to buy your own PSU though.