ah, found it. off the trek website
someone needs to make this chart for sram too.
Component Comparison
Shimano
Best
XTR
Deore XT
Deore LX
Better
Deore
Alivio
Good
Acera
Altus
C-Series
T-Series
Bontrager
Best
Race XXX Lite
Race X Lite
King Earl
Better
Race Lite
Race
Big Earl
Good
Select
Superstock
Earl
RockShox
Best
Reba
SID
Better
Duke
Pilot
Good
Judy