It just means Cat5e will work for all PoE and PoE+ cameras but Cat6 will work fine and will not heat up quite as much as Cat5e when using the higher power PoE+ cameras so Cat6 is better just a little more expensive which is why some would avoid it still.
Hit the Hikvision section, and ask for recommendations as most of the LaView kits I have seen in the USA are HIkvision OEM products, thus Hikvision OEM ( international ) models should work well - you will have to take some time of course to configure the ip/subnet/user+password/port settings.