the only i know is ETC price is cheaper than Ethereum and we can buy much of ETC than ethereum. actually i don't know about ethereume and ethereum classic project, i only know that both is good investment for long term and we can hold it right now as the price is not really expensive to bougt.
I don't agree here, especially regarding ETC, because if they don't focus on nodes problem, you will just loose money because they would be unable to unify their network and connect to each other. I told them they should use something like bitcoin-seeder to keep track of their nodes, or add a specific signal to ETC nodes to speed-up the nodes filtering.
They are still working on it, but i don't know if they are going to be able to solve this problem. And this is the most serious threat a coin could face.