Problem with both is that they are still Chrome at the core. Currently Google has way too much power dictating how browsers render the web for users and things don't get any better by using any Chrome(ium) forks.
Only real hold out is Firefox even Microsoft buckled under the pressure. If we lose Firefox then in the future don't be surprised when Chromium support suddenly stops and only game left in town is Chrome.
Now all the nay sayers will come in defense of open source and my only response is: don't be so fast to forget "embrace, extend, and extinguish"
Apple will keep developing Safari, luckily, so there's still a 3-way race in many ways.
Safari is only ~4% of desktop/laptop browsing but over 20% of mobile and with mainstream users slowly moving to tablets over laptops this presents an important and large user base.
If it comes down to Chrome or Safari, I will gladly use Chrome. Safari is far too wonky for me, and whenever I tried using it, I always had bad experiences. Google might be evil-ish, but I find their ecosystem far more pleasant than Apple's. And while Google might try to collect lots of data about my online behavior, I can always use something like a Pihole or other kinds of ad-block to stop them from getting that data.