DEC Catalytic Converters

[Brian Blevins]

  Hi All, My 2000 A6 2.8 quattro Avant is in need of new catalytic 
converters. I'm looking for feedback from anyone who has used, or has 
experience with, Diversified Enviromental Cat (D.E.C.) converters on their 
Audi, or C5 bodied A6 in particular. I understand they are near O.E.M. 
quality, but before I go aftermarket I'd like some BTDT info...    Thanks 
for any help you can offer!    Brian