I would buy ETC but I can't honestly be bothered to do it. My BTC is too precious to be spent in some altcoin gamble. ETC is cheaper and has higher chances to pump. ETH is the one fork that is suffering the most with desperate holders going nuts about it.
You can trade the ETC and ETF. But make sure you sell the ETC before the DAO hacker or others dump their coins.
^This.
You can talk about immutability and decentralisation all you want, in the end, money talks. There is no ethics here.
ETH has a dedicated team that is working their asses off.
ETC has someone sitting there with the financial equivalent of a kill switch.
You can be on team ETC because morally, it is the right thing to do*, but most people will follow the money.
There is a good chanc that ETC pumps again, but it is dancing on an active volcano. I know my trading skills (or more the lack of them) too well to risk this.
*This is not necessarily my opinion