Prints from negatives are superior to those made from slides. Even slides made from negatives can be better than actual slides! If you don't believe me,
listen to what PE has to say.
It's a great interview, and I understand and agree with the gist of what PE said. Negative films are amazing, and have many advantages over transparency films in many situations.
However, like so many engineers and other strictly-technically-oriented types, he left a bad taste in my mouth with a few absolutist statements. He seems to project the general view that because something is better from his standpoint as a technician, that it is the obviously the better tool for everything that everyone will ever do. They refuse to see anything other than the technical, and it comes off as being closed-minded and very far-removed from actual practice. They never consider that artists or professional might actually LIKE the technical "imperfections" of a material, learn to know them, be able to control them, and prefer them to the technical "ideal".
In short, I'd rather have the technical information, and use it to make my own opinions. Technical information all too often comes hand in hand with opinions stated as facts as to what people should want from an image.
Personally, for most pictorial applications, I do not usually like images in which the entire tonal range of the scene lands on the straight line portion of the curve. I like compression. It is as simple as that. The compression is what film is all about for me. That's the reason it looks so much better than digital to my eyes. If I want to capture a scene on a straight line, I can shoot digital. If I want to shoot onto a straight line with film, I know how to do it. Even if I wanted to shoot onto a technically ideal film all the time, I would still welcome the availability of aesthetic choice for other photographers via having "inferior" materials continuing to exist. I like Ilfochrome prints because they are unique in their contrast, color, and surfaces. If I don't want that look, I can either be smart enough to not shoot for that process, or suffer the results. Engineers and other tech-obsessed types need to give all users of tools some credit and responsibility, and quit telling us what is best for us, what kinds of things we should be doing in practice, and what results we should be aiming for.
If the picture/situation does not suit transparency film, then don't use transparency film! What's so hard about it? There are plenty of situations that do not, and plenty of situations that do. The fact that negative and positive films have different technical attributes should be seen as a good thing, as it gives artists variety. Negative film being "better" for a long list of technical reasons is no reason whatsoever that transparency film should not be used. One should use whatever tool will give them the results and the control they want. For me, that is black and white neg sometimes, color neg sometimes, color pos sometimes, and digital sometimes. Except for digital, I would be very depressed if any one of them was not there.