We discuss it every day here at Fool HQ. And from your emails, article comments, board posts, and CAPS blogs, we know you do, too.

Whether the market's up or down, we are all water-cooler speculating about the biggest market opportunity. This week, a bunch of Fools analyzed whether your favorites are big opportunities or big sucker bets.

We've created a Foolish version of those lame book-recommendation lists to help you prioritize your reading:

If you like UnitedHealth Group (NYSE:UNH) and/or indecision, you'll love: Biggest Market Opportunity: Health-Care Stalemate?

If you like Gold Shares (NYSE:GLD) ETF, or, to spoil the surprise ending, Silver Wheaton (NYSE:SLW), you'll love: Biggest Market Opportunity: Gold?

If you like Procter & Gamble's (NYSE:PG) Tide detergent or Clorox's (NYSE:CLX) bleach, you'll love: Biggest Market Opportunity: Consumer Staples?

If you like collecting miniportraits of Ben Franklin or just like reading investing quotes from Berkshire Hathaway's (NYSE:BRK-A) Warren Buffett or Baupost Group's Seth Klarman, you'll love: Biggest Market Opportunity: Cash? (No, I'm Not Insane)

If you like, well, Sirius XM Radio (NASDAQ:SIRI), you'll love: Biggest Market Opportunity: Sirius XM?

If you like investments with the potential to reach the stratosphere (get it?), you'll love: Biggest Market Opportunity: Cloud Computing?

These are only six of your favorites. We know we've missed a lot of them, so use the comments box below to let us know what you think the biggest market opportunity is.

Anand Chokkavelu owns shares of Berkshire Hathaway and Sirius XM Radio. Berkshire Hathaway and UnitedHealth Group are Motley Fool Stock Advisor selections. Berkshire Hathaway and UnitedHealth Group are Motley Fool Inside Value recommendations. Clorox and Procter & Gamble are Motley Fool Income Investor selections. The Fool owns shares of Procter & Gamble, Berkshire Hathaway, and UnitedHealth Group and has a disclosure policy.