Present condition of ETH, it will reach to 500$ only because BCC is also generating great volumes along with Bitcoin. So i think present condition there is huge competition for Bitcoin in coming days.
My opinion may be unpopular here, but eventually ETH will match or surpass BTC maketcap. Just like Facebook surpassed Myspace. It won't happen overnight, but 1-2 years is a safe estimate. It all comes down to tech fundamentals and the development community. There's a reason why developers are flocking to Ethereum, and why Bitcoin can't even agree on simple protocol upgrades without having to fork.... Of course, nobody really knows for certain what will happen, so take my comments with a huge grain of salt... But to me the risk/reward is very clear and favorable towards ETH in the long term.