[favorite band (besides zeppelin)?]

The Beatles, Pink Floyd, Creedence Clearwater Revival, The Doors, The Eagles, Grateful Dead, Ramones, AC/DC, Cuby+Blizzards, Cream, CSN&Y, The Animals, The Stray Cats and probably a lot more.... 

[What is the most relaxing layed back Zeppelin song?]

That's The Way

[Led Zeppelin's most beautiful song?]

It's hard to pick one, but for now I think it's Ten Years Gone. 

[BEST LIVE VERSION OF NO QUARTER?]

18 hours ago, JohnOsbourne said:

This is indeed a brilliant version, but the next night (also in Vancouver and on SB) is even better.

Thanks for the tip! I'm walking through my bootleg collection but I haven't heard this one until now. This one is really stunning!

[BEST LIVE VERSION OF NO QUARTER?]

Well, I haven't heard all available versions (yet) but I'm listening to the "Snowjobs" bootleg version from March 19, 1975 right now and I can tell you it's brilliant!! Both performance and sound quality are great.