What's better, SPY or VOO?

Could you please enlighten me on the advantages and disadvantages of investing in SPY versus VOO? I'm trying to decide which ETF would be a better fit for my portfolio. Could you compare their performance over the past few years? Also, how do they differ in terms of fees and expenses? Is one more diversified than the other? Could you also discuss their respective risk profiles? Additionally, which one would you recommend for long-term growth potential? Thank you for your insights.