I can only limit myself to the top 3.
1. His solo at the end of Tango in the Night. It fits the song so well and it's such a contrast to other parts of the song where he is finger picking notes.
2. The solo at the end of Gypsy, especially the long version. As with many of Stevie's FM songs, this song really benefitted from Lindsey's arrangement and beautiful solo.
3. I also love his solo at the end of Sisters of the Moon.
Kevin