I went with the cheapo CAI controller, so I could have a tested, un-used spare, ready to install, just in case lightning revisits us..
Last summer lightning took out two of my outdoor security cameras.
I think it was the long cables, picking up the EMP.
There are all kinds of network cables around here, and one of these days...?.
Just hope it doesn't toast the whole house network..
It seems like every 5 or 10 years, we take a small jolt and a few items get blasted.