Don't get me wrong: I think that Chipotle Mexican Grill (NYSE:CMG) (NYSE:CMG-B) offers yummy food at relatively reasonable prices. But when I'm looking at investment opportunities, as opposed to dinner choices, I have to consider the bottom-line results. In that respect, Chipotle looks a little overstuffed -- er, overpriced -- in this competitive market.

On the surface, Chipotle's third-quarter results aren't so bad. Revenue was up by 18.9%, and same-store sales increased by 3.1%. But what if I told you that the same-store sales increase was primarily driven by price increases from previous quarters? Add that tidbit to Chipotle's plans to increase prices by another 6% this quarter, to counter increasing commodity costs, and you get a not-so-tasty combo meal.

These commodity-cost increases are already hitting profits: Operating margin dropped by 160 basis points to 21.4%. Net income decreased by 5.5%, and EPS dropped by 4.8%, even with the price increases that consumers have already swallowed. Chipotle plans to buy as much as $100 million of Class B shares; while that'll certainly boost future EPS growth, it'll also consume almost 50% of the company's current cash stash.

I love that the company has no debt, and that it will continue to fund its new store openings entirely through operational cash flow. I just question how scared consumers will take a 6% increase in prices that are already hovering at the premium end of the quick-serve restaurant business. Former Chipotle parent McDonald's (NYSE:MCD) reported same-store sales growth of 4.7% yesterday, and that comes after increasing its dividend to a 3.6% annual yield, all while keeping menu prices stable, even with commodity cost increases.

McDonald's recent success reflects a trend we've seen across restaurants and retail in general: The Value Menu is trumping premium products. Foodies like Wendy's Arby's Group (NYSE:WEN), Yum! Brands (NYSE:YUM), and Burger King (NYSE:BKC) are increasingly competing on price. Will struggling consumers continue to choose Chipotle's premium burrito offerings when they can settle for a Cheesy Double Beef Burrito on Taco Bell's dollar menu?

At a trailing P/E of more than 19, and dwindling same-store sales and earnings growth in today's market, Chipotle just doesn't seem to offer superior long-term investment value, especially when you can buy value-focused and dividend-yielding McDonald's stock at a P/E less than 14.

Further muy caliente Foolishness:

Chipotle is a Motley Fool Hidden Gems and Rule Breakers pick. Looking for more advice in an all-consuming market? Give the Motley Fool's newsletter services a try free for 30 days.

Fool contributor Colleen Paulson does not own positions in any of the stocks mentioned above, but she's always game for a Spicy Chicken Burrito. The Motley Fool has an organic, free-range disclosure policy.