Finding a decent part of shorts is dead tricky. By far the best fitting and looking shorts I've come across are Post Overalls' Menpolini model they repeat each summer. This year, they've done a 'blue eyes' version which is outstanding. It's almost as nice as the 'green buds' pair from last summer - still my fave. The detailing on these knee-length, slimmish fitting bad boys is immaculate. For example, different materials are used on the two pocket linings.
You can snap 'em up from The Bureau (Europe) or Unionmade (US).