LTC/QRK/XRP
Put enough into this trio and you will be a millionaire by end of next year.
Those three are my picks as well. Plus I'm watching Protoshares. I think there could be something there.
But I honestly feel like Quark has the best combination of buzz, community, and features that it could really fly this year. It's still a long shot, but one I'm not willing to pass up.