http://www.zecco.com/blogs/condoroptions_blog/SPX-or-SPY-The-Case-for-ETF-trading.aspxJust came across a good post from The Options Insider founder Mark Longo about the advantages of using options on the S&P 500 ETF ( SPY ) instead of the traditional SPX options. We've written about the advantages of ETF over traditional index optionsen-USZeccoServer