Which energy measure box for controlling charge station easee

I have bought an Easee charge station for electric vehicle, if I get a good input from house total usage of the 3 phases I can load balance the charger depending on house power usage.

My question is which is the best/ easiest maybe cheapest way to see power usage of the 3 phases into Home Assistant.

is it using a modbus normal powermeter such as this
https://www.elbutik.se/product.html/garo-energimatare-3-fas-direktmatare?fbclid=IwAR2CNCcuKkAOwUkfWjcMJCcMs8Z7ob5fuM0ZEQeEOcJRGlFW4Lv6wokSQig

or this zwave DIN version

or better using something like this zwave with xcurrent clamps

or this which seems to see voltage per phase


video https://www.youtube.com/watch?v=kDIK0BP4Xss

or something else?