ANSWERS TO MY OWN QUESTIONS
Beautiful Day:
GH&R (1-disc) is just slightly faster than (2-disc), but with a longer lead-out to a different song. GH&R (3-disc) is, as established, the full version without transitions to and from songs, and is also slightly slower than (2-disc). Creamfields is again slightly slower than that.
EBTTRT:
GH&R (3-disc) is identical to the EBTTRT single. The version on (2-disc) is the same, but has about 25 seconds edited out of it (in pieces throughout) and an overlapping beat at the start from the song before.