In the August, 2006 issue of KEYBOARD MAGAZINE, their reviewers conducted a ORCHESTRAL LIBRARY ROUNDUP of orchestral libraries from the top sound developers, and here was their conclusion ...
"Across the board Pro XP's samples have a fatness to them that other libraries don't quite capture. Ultimately, the level of warmth and detail in the recordings, multiple mic perspectives, flexible ensemble sizes, and wide range of articulations make Pro XP an obvious choice for anyone whose goal is to produce ultra-realistic MIDI mockups." - KEYBOARD (Orchestral Library Roundup)