I've been listening to more Guitar-heavy music lately, Pink Floyd, Dire Straits, and much more. I think the best guitar solo I have heard is from Telegraph Road, but I want to hear what you think.
Comfortably Numb - Floyd/Gilmour.
Air Dance - Sabbath/Iommi. The outro solo.
Take your pick - KISS/Ace Frehley. His solos often exist as songs within songs.
Sailor's Tale - King Crimson/Fripp
While nothing comes immediately to mind, I go for a more "legato," less-is-more approach. While I appreciate speed, to me a tune such as Peter Greene's "I Need Your Love So Bad" is what grabs me. Gary Moore did it well, but then would get out of control with a million notes per second and volume . But "Still Got The Blues For You" and "Parisian Walkways" are good examples.
So many tasty leads over the yrs.
Honorable mention: PF`s "Mother", along with the aforementioned "Comfortably Numb".
If steel guitar efforts are allowed: Jackson Brown`s steel player`s emotionally charged live version`s "Running on Empty".
Red Ryder`s "Lunatic Fringe", IMO, is tasty too.