Undersquare vs. Oversquare Engines

Sometimes I think you guys get over thunk in the over thinking dept, I AM LOST

To me this is a simple A or B, like the OP started out with.

The OP is NOT gonna be installing a turbine, F1 engine, Stude or ever a Ford SOHC

He IS going to be building a SB Mopar vs a B/ RB Mopar. Seems to me it gets back down to "simply".............

What is the bang for buck out of what the OP has to work with and is willing to spend? In "my house" that is ALWAYS the bottom line LOL

In a mild build does a B / RB have better head potential than an LA at the same dollar figure?

That would be one of my "questions" if I had a SB and a B/RB "lying around"