I think that you may be asking two seperate questions.

What are the best flying fixed bladed head? In my experience, with my setup, I would have to say that my best flying heads where two bladed non-vented heads like magnus. I have also heard good things about slick-trick. I may give them a try sometime. Does anyone know if they cam out with their 125 grain head yet? thats about as light as I would go.

What fixed bladed heads fly the same as field points? To this date, I have not founds any.

For best all around head, I would have to say any Muzzy Head.