OK, I've read as much of the debate as I can handle on-line, and understand that it's a question of 'which is worse' as opposed to 'which is better' - but I am sure that there are some MNers who know their stuff and will be able to give me the latest on what we should be using.
If you think it's margarine, it would be helpful to let me know what brands are supposed to be healthier. If it's butter, then I'll have to stop slicing it onto the toast