We've made the trip up to the Peak several times - once by car and some by cog railway. I greatly recommend the cog railway if you have a fear of heights (as I do). The road is now paved, but is still narrow and full of corkscrew turns. More important, the ride on the cog railway lets everyone see the view, and if you are lucky, wildlife such as bears, marmots, wild sheep and (on one memorable occasion) mountain lions, and includes narration by a guide who generally has some interesting tales and can point out objects of interest that you might not otherwise notice. You can take drinks and food on the railway, which might be a good idea. When I say "disappointing destination" I don't refer to the view, which is almost always very dramatic and beautiful, as long as it isn't cloudy. I refer instead to the visitor center, which is really just a gift shop and very poor café. If you like donuts, I am told that they have good ones. They have various kinds of fudge and other candy, but the rest of the food is....well, let me say that McDonald's is vastly superior by comparison. The restrooms appear to date back to the 1950's but are generally clean. There are currently efforts under way to try to build a true visitor's center that will allow much better viewing of the scenery as well as a history of the Peak, but I'm afraid that's a number of years in the future.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.