Cuisinart Food Processor
I have just bought the 14 cup Cuisinart food processor DFP 14 BCN and wish I hadn't. The feed tube is so small that you have to cut all solids in to one inch chunks, or lift the top each time you want to add something.
Both Consumer Reports and Cooks Illustrated quite like this model (though CI does mention the inconvenience of feed tube size) but I find the problem terribly annoying.
I think I have the same model and the feed tube is quite large, compared to other models. It is a double feed tube assembly where the inner feed tube is smaller (carrot size) and the larger would hold a whole potato or could accommodate 5 or 6 vertical carrots at a time.
From my perspective, the problem is the larger tube has the safety on it and won't work if the safety rod is not engaged. The only solution I see for that it is cutting the safety rod off the feeder and replacing it with a rod that stays permanantly engaged.