I wouldn't be suprised if it does go to 500, we already saw BTC going from 1.2k this year to over 10k. Many were calling that Bitcoin will reach 10k before the end of 2017 and now we are seeing this milestone being touched at the begin of December, so we have an entire month to go which has a lot of potential. I think it's likely that it will go even to 15k, so the other beneficiary will of course be ETH, when the overal outlook is bullish the all the coins are gaining some piece of the cake, in case that happens I think that ETH at 500$ is quite conservative, we'll see way more beyond that and that will happen only if more money will start pouring in, but considering the entire situation in the market I think it's very likely.