Or can you maybe do both?

I've heard so much conflicting advice about this (in general, not directed at my work) and it's making me have doubts about my opening for my WIP (action). I'm prone to doubts anyway. And the idea that readers/agents/publishers often don't read past the first page freaks me out. After awhile a story's scenes become pretty set (flowing one from another), but at the beginning there are so many possibilities it's overwhelming. Any thoughts / advice?