Hi guys, I'v been trading options here is AUZ for a while now and due to the current market I've decided to look to the US for new pasture. Here is AUZ we have the S&P ASX 200 which have options however you cant really go outside the top 20 without been meet with serious liquidity problems. I know in the US that you guys have a much much bigger market, however before I try entering the SPX 500 members into my IB watchlists for serious analysis. I was wondering if I should only stick with, say the top 200 members. Thanks for your answers is advanced, it shall save me a lot of time. I would be looking to use $5k on a contract with max $10k per underlying. Thanks.