As a general rule, I like the over priced for puts and under valued for calls, but liquidity is a biggy for me - but just general rules I use, not in stone. I think it's best to find several that meet an individuals criteria and become very familiar with how each trades instead of just scanning and picking one to play...JMO
Register for free to join our community of investors and share your ideas. You will also get access to streaming quotes, interactive charts, trades, portfolio, live options flow and more tools.