I looked into this a bit before buying the 7002.
The CTEK 7002 is a newer version of the 7000 but both are essentially the same. The 7002 has newly designed battery leads (fully covered in plastic for 7002 vs exposed ~1" tips on the 7000) and a slightly different battery recondition (RECOND) mode. The 7000 uses 16.0V for 4 hours in RECOND mode where the 7002 uses 15.7V for 0.5 to 4 hours. I guess CTECK determined the full 4 hours @ 16V was too aggressive in some cases.
CTEK makes separate versions for North America vs the rest of the world. North America gets the Multi US 7002 and UK gets the Multi XS 7000. I don't think there is a 7002 version for the UK but I never really looked into that.
Straight lines are for fast cars...turns are for fast drivers
'04 M3 - track
'06 650i Cab - daily driver
'02 Highlander - kid hauler
'01 330Ci - winter beater