The best way to combine variables and create a sentence

I’m trying to print out log by “Print String” of Blueprint node. Before calling “Print String” node, I want to create sentence to understand logs easily.
There are several ways to combine variable and create a sentence such as “Append”, “Format Text” or “Build String” etc… My question is which one is the most heaviest and lightest process.

I appreciate your comments. Thank you in advance.

I usually just use an Append node. I like how flexible it is supporting both litStrings and input pins right from one expansible node.
I haven’t objectively tested its performance but does it matter if you intend to use it during development only?

If this is functionality you eventually want ship with just remember that debug nodes like PrintString won’t compile into a shipping build. I’d use UMG instead.