Which stocks that trade both in the US, and in TSE have the most liquid and tight spreads (like penny stock options)?
http://www.marketwatch.com/optionscenter/screener?screen=1&displaynum=100 this shows a list of the top 100 options by volume for a day. in general the highest volume stocks have the highest volume options and therefore the tightest spreads. not to be rude but goog is your friend (that's how i found the above link).