I would choose eth than eos at the moment because its more profitable and better than eos. Much more stable and always increasing the value has made eth become more demand.
What kind of profit do you mean? The cost of EOS is now around $10 per coin, and Ethereum is $600, so EOS has a greater growth potential than Ethereum. EOS is likely to cost $100, which means that its price will rise 10 times. To ensure that Ethereum has risen in price 10 times, it needs to cost $6000. Based on this, I believe that EOS can bring its owners more profit than Ethereum, as it has much to grow.
This is a very risky way to judge how to buy. You need to look at the overall picture - real life use case, community support, developer activity, and most importantly, number of tokens/coins available, and overall market cap. Just like Ripple could never realistically hit $10, it will take pretty much a miracle for EOS to hit $100.. or anything even close to this.