Exhaust type question.
 

What are the pros/cons to the following. Besides the price difference does the type of material in x-pipe's and headers make a difference.

For example, the exhaust I am looking at is:

Bassani o/r x pipe

stainless steel or aluminized?

Bassani Headers:

Chrome or HTC Coated?

are the HTC and stainless worth the extra ~$100 on each?