I've been travelling on a more or less weekly basis to the Peak District now for over a year, and visited everywhere I can reach on public transport from Sheffield - about a third of the Peak District I suppose.
During this period I've discovered, or re-visited, my favourite spots; and here are the details:
The Great Ridge
Least Favourite Place
The appropriately named 'Wardlow Mires' - it's a dump; just a derelict garage, a transport café, a poky pub and a few farm buildings situated on a busy stretch of road.