My problem with ETH is that because it is a more complex software, and because they "layer" other systems line Storj there is a much higher probability that there exist software bugs and security vulnerabilities that could be used to hack the currency. What I'm saying is that basically there are more vectors of attack available because of the type of blockchain software it is. Bitcoin however, has a much more secure software. The cyber security expert John McAfee even called the Bitcoin software "extremely secure" which is a big deal especially coming from him.