Above screenshot shows post-Christmas 2013 thru March 31, 2017:

Which one to buy??

Breakdown of performance for that period (in USD terms):
Bitcoin/USD: +80%
S&P 500 Stocks: +30%
Real Estate (REITs): +26%
Gold: +3%
Bonds: +1%


(Note: Bitcoin performance suppressed due to post insane Chinese-run in late-2013)

[EDIT: Updated chart below thru to early December (BTC performance now +1700%):