hobnob, I got some unfinished oak worktops to use as tops to some joinery units (ie, not in the kitchen), but knew I needed to finish it with SOMETHING. On the basis of what a load of helpful MNers said (!), I ordered samples of the danish oil, the hard wax oil (fiddes) and a tinted osmo oil, and tried them all out on a sample of the oak worktop.
I found the danish oil to bring out a sort of orangey hue to the oak, which made it just look wet, and not great. I loved the hard wax oil, which gave it a matt finish and hardly altered the colour. Also loved the tinted oil, but that is a slightly different creature anyway.
On the oak that I have, I just didn't like the finish I ended up with. Have got the fiddes hard wax oil for the oak in one area, and the tinted oil (which I think I still need to finish with the hard wax oil anyway) in another.
I guess it is all about what finish you want, and what material you are working with in the first place.