Originally posted by johnblank79
uh, make that "derailleurs"
Hope this is what you're looking for, and that I've covered them all....
For MTB
Acera entry; 24-speed, great braking and shifting impressive function, great price
Alivio active; 24-speed, great braking and shifting, stylish looks improved shifters, sleeker shapes, less weight
Deore enthusiast; 27-speed, great braking and shifting, light sweet parts and price
Deore LX sport; 27-speed, sweet braking and shifting, lighter, fine finish, durable nearly XT shifting and braking
Deore XT race; 27-speed, lighter, great braking and shifting, beautiful, more durable works nearly as well as XTR
XTR pro; 27-speed, superlight, phenomenal braking and shifting and ultra durable world's lightest and highest tech off-road parts group
For ROAD
Campagnolo
Mirage entry-level; double or triple w/9 cogs fine function; some steel parts
Veloce enthusiast-level; double or triple w/9 cogs nice function; less steel; better finish
Daytona serious-level; double or triple w/9 or 10 cogs most affordable 10-speed group
Chorus race-level; double or triple w/9 or 10 cogs almost Record quality and finish
Record pro-level; double or triple w/9 or 10 cogs world's lightest group
Shimano
Sora entry-level; double or triple w/8 cogs some steel; shifts and brakes great
Tiagra enthusiast-level; double or triple w/9 cogs less steel; more interchangeability
105 serious-level; double or triple w/9 cogs great price; hollow crankarms
Ultegra 600 race-level; double or triple w/9 cogs almost D-A quality; hollow arms
Dura-Ace pro-level; double or triple w/9 cogs Lance's group; superlight