Probably the most important question is how is the ISOS 4 compared to the previous ones? This time as a double CD, it is also of the presentation certainly the best! CD1 and CD2 with 77:49 to 77:00 with trance at its best! Quite typical is the start with a lot of depth on CD1, to choose from also clearly many vocal tracks include. Old friends like Gabriel and Dresden (brilliant: Arcadia) are, as well as BT, super. The CD1 will always kick Ender. CD2 starts there where CD1 ceases Check Track4: LNQ. Driving from Track5, then with a super-long remix of UR and a finish with two super Tracks at the end, incl. LSG. The ISOS 4 deserves the full 5 stars. I personally like the ISOS 3 still best. For all fans, however: the ISOS 4 is a must-have!