Top Radiator Hose Collapses

OK Lets start this off a different way....lets not even worry about my hose condition or Bottle Catch Can OK

1:) Stant Manufacturing #10231 Vented http://www.rockauto.com/catalog/moreinfo.php?pk=48504&jnid=2&jpid=4

2:) Stant Manufacturing #10230
http://www.rockauto.com/catalog/moreinfo.php?pk=48503&jnid=2&jpid=3

If I was to look at 20 Cars today all would have caps with out the word Vented on them. Plus a good buddy of mine has a 70 Duster 360 just like mine and his cap says 10230 right on the top.

I am just trying to figure out what cap to use that is the correct one, or does it matter.