What is the best source/bootleg for 1974 Cologne concert?

Sometimes I get confused about certain concert, there are so many different sources, versions,, for particular one...
http://www.queenlive.ca/queen/74-12-06.htm

What is the best source/bootleg for 1974 Cologne concert?
There had been at least three versions shared here:

1. "In Concert '74" (Gypsy Eye) silvers
Gypsy Eye have once again added their crackling sound (as it stated on Sir GH's site)
http://www.queenzone.com/forums/924376/announce-cologne-6-december-1974-flac.aspx

2. master tape
Most of the recording (minus God Save The Queen) plays a bit too fast (as it stated on Sir GH's site)
http://www.queenzone.com/forums/1188909/announce-queen-cologne-sartory-6th-december-1974-flac.aspx

3. "Majestic Wintertime" (Godfather) silvers
I'm not shure is it better, worse or the same as other two versions (1. and 2.)
http://www.queenzone.com/forums/1479867/announce-queen-majestic-wintertime-cologne-the-hague-london-1974.aspx

99.9% of the time if the master tape has been transferred and circulated, that's your best copy.

Here is a download link to the master tape: http://mega.nz/#!YbolSZZa!jbmB6CQ-Asm5_VJvWzg3hs9njTWV_ruhfjFRUJq3DKM

-Chin :)

ok, Thanksto both of you.