Is the £100 price difference worth it?
What benefits does the DS-7604 have over the DS-7104?
https://www.aliexpress.com/store/product/Hikvision-4ch-NVR-DS-7604NI-SE-P-Up-to-5-Megapixels-resolution-recording-With-4-POE/217821_2027324642.html
https://www.aliexpress.com/store/product/Hikvision-Embedded-Mini-NVR-Plug-Play-PoE-NVR-DS-7108N-SN-P-8CH-Network-Video-with/133411_32306815508.html
What benefits does the DS-7604 have over the DS-7104?
https://www.aliexpress.com/store/product/Hikvision-4ch-NVR-DS-7604NI-SE-P-Up-to-5-Megapixels-resolution-recording-With-4-POE/217821_2027324642.html
https://www.aliexpress.com/store/product/Hikvision-Embedded-Mini-NVR-Plug-Play-PoE-NVR-DS-7108N-SN-P-8CH-Network-Video-with/133411_32306815508.html