im planning on buying either the dc sports 4-1 jdm header in ceramic (stainless is to much $$)
http://www.inlinefour.com/dcsporjdm41h.html

or the the normal dc sports for to one ceramic
http://www.inlinefour.com/dccer1pc4in1.html

or the the same one but in stainless
http://www.inlinefour.com/dcstainsteel.html

now i know of course stainless steel would be the best but would it make any difference if i got just the ceramic, i mean does the materail make any difference?
which of the headers listed would u prefer?