Vanguard’s S&P 500 ETF (VOO) and Invesco’s S&P 500 Equal Weight ETF (RSP) represent two straightforward ways to own broad U.S. large‑cap equity exposure, but they embody materially different philosophies: VOO is a low‑cost, market‑cap‑weighted S&P 500 tracker built for buy‑and‑hold investors...