In my view, the best investment at this point if GoldCoin™ (GLD).
Bro, you are advertising the goldcoin shit forever! I like goldcoins and bitcoins just the same, but you don't have to go crazy over it :/
Anyways, Don't just post this in threads, at least answer their questions...
To answer your question, It's all up to the users. No one is 100% sure, or even close to that. All I can say right now is that bitcoin mining difficulty, and business accepting bitcoin, are both rising sky-high. So I conclude that bitcoins will be worth quite a lot more after a few years. How much, exactly? No idea :/