The BEST way to watch the games?

Without going on a tangent about blackout rules, what’s the most cost-effective way to watch the games? I’m aware of the ways to stream for free, but I have no problem paying for it for the duration of baseball season.

My dilemma is finding a service that I can use on PlayStation, Roku, and Xfinity flex, or at least a combination of two of those systems with PlayStation being non-negotiable. (So that when my kids are in one room, I don’t have to disturb whatever the f**k it is they’re doing or watching so I can watch the games.)