Update every frame?

The RenderStepped event of the RunService fires every frame, but in LocalScripts only.

While it is an event you can connect to normally, I usually see scripts that look like this:

while true do
    game["Run Service"].RenderStepped:wait()
    -- do whatever
end

I'm not really sure which would be considered "better", though I think the way with the loop is much more straightforward.