What are the best practices for Multi-site and cache

OK - someone awhile back suggested W3 cache -- and I had network activated and having some issues -

I just read that it does not support network activation and that it needs to be activated on each subsite -- but that listing was old --

There are two points of view if it is allowed --- 1) network activate and super admin can handle the global settings --
2) activate it on each individual site and have everyone configured differently --

I have had major issues cause I site activated some -- and then when I network activated -- it cause major problems because I could not deactivate it on a specific site if I have issues ---

so what does support receommend?