The 57 definitley sounds better. I don't know anything about the ADX, but it sounds to me as if it is something I don't want.
David
S8PE
WinXP SP3
P4 2.66 Dual Core Asus P5LD2
3 GB Ram
Radeon X300/X550 series dual video card
RME Multiface II
Mackie Onyx 800R Mic PreAmp
2 internal Glyph Seagate (80GB & 200gb)
1 external Maxtor 120GB HD (for backup)
Dynaudio BM5A