Best paints for suspension rust prevention?

[75tourer]

Hi- am going to bit of tidying up underneath and was thinking along the lines of:-removing as much loose rust as possible, rust convertor, high zinc primer and hammerite. Did a bit of googling and it seems to be that hammerite is not the paint it used to be. Does anyone have any experience of good paints?. Is there a better way of doing it apart from the powder coating route- Thanks