I personally prefer EOS. Simply because right now there is more potential for growth. The team is strong, roadmap is clean, Asian region just fell in love with this coin, so from the speculation side, EOS is more attractive than ETH. They just launched their own mainnet, so this project is definitely worth your attention.
What team? Block.one has said their job is done. They are no longer involved in the launch of EOS, and in my opinion the community is not yet mature enough to launch it either. In all honesty the project has turned to shit imho.