Fool.com analyst Austin Smith believes that Dunkin' Brands (DNKN)is simply too expensive, especially while other companies in the space continue to do much more impressive things. Primary competitor Starbucks(SBUX 1.09%) is rolling out its own energy drinks and smoothies, competing against not just Dunkin' Brands but also Jamba Juice (JMBA)and Monster Beverage(MNST -1.46%), and they're doing exceptionally well.

Dunkin' Brands is trading at 55 times earnings and has way too much debt, and that's just the beginning of its problems -- check out the preceding video to learn more. If you're looking for an alternative in this space, you might want to consider Green Mountain Coffee Roasters as an investment idea. The stock is cheaper than it's ever been, causing many investors to wonder whether this is the end of the former market darling, or the perfect entry point for an enormous rebound. You can find our recommendation on how to play the company in our premium research report, which details everything you need to know about Green Mountain, including whether it's a buy at today's prices. Click here now to access your copy of the report.