Zeppelin. Skynyrd was more original, but Zeppelin put out a greater range of good stuff.
Zeppelin. But really, they're too different, you can't even compare the two.
Led Zeppelin, definitely.
Ilike them both,but I would lean toward Led Zepplin
Led Zeppelin, Skynyrd was good, but they were primarily a cover band that got lucky, Zeppelin was much more than that!!