OK so you've tried many sources, thrown money at it, and you've rejected them all. Is that correct?
So what is the problem? It's you, you're in the way of your own success. At some point, you're going to have to let go and just accept one. You've resisted because you feel like you'd compromise if you went with this one or that one. That's not the case.
Get one into testing. GO! It will be okay. You can also choose two, and A/B test your home page with logo A against logo B, see if there's any difference. Now you have **real numbers**, something rational to bounce off what has been holding you back. And if you made the wrong choice, guess what? You can choose another one later. The world won't end if you change your image, web sites do it all the time.
Don't let your logo be the symbol that represents your fear of success. Go for it! :-)