HD-CVI Cameras, mostly by Dahua. No need to re-wire to upgrade to 720p, 1080p. 4MP HD-CVI 3.0 has launched as of November 2016.
Nearly all HD-CVI Cameras by Dahua are HD/SD selectable, so you can use them with older analog SD DVRs.
eDigitalDeals is an authorized reseller of Genuine and OEM Dahua products. Genuine Dahua carries a 5-year warranty, 1-year advance replacement, and access to Tier-3 technical support from Dahua USA.
"OEM is short for original equipment manufacturer... OEMs are manufacturers who resell another company's product under their own name and branding."