I'm looking to install a 2 camera (later 4 when my extension is complete) PoE system connected to a 4 Ch DVR. I'm looking at Hikvisions range and currently considering the 8MP Colorvu cameras. It is my intention to buy pre-made cables from Kenable, all the cabling will be inside (under floor boards etc) and I'm wondering what cable to install. Longest run will be 20metres so cable length is not an issue, it's the ability of the cable to connect to future high MP cameras etc that I'm thinking about. Do I install CAT6a shielded, or CAT7 (F/FTP) or CAT8.1 (SFTP)? All are full copper. I don't want to be changing cables for 10-15 years, future proofing is my concern.
Edit:- The cost difference between the 3 types, for the 4 cables I want to buy is negligible, should I just buy the best cable (CAT8.1) and be done with it? e.g. 20m of CAT8.1 is £15.40, 20m of CAT7 is £12.00 and 20m of CAT6a is £11.05, I need 2 x 20m and 2 x 10m. Cable cost wouldn't be an issue.