quattro versus 4Matic?

[Doug Johnson]

I've run across an '04 C240 4Matic with 2,800 miles for the typical retail 
price identified at kbb.com.

Not a flaw on this one, folks, but when the salesman mentioned chain-drive 
transfer case....I think my heart stopped.  <checking pulse, again>

If you've got any thoughts from real-life, hands-on experience with these 
cars, please let me know.

Thanks!

Regards,

~ Doug