Both Mouser and Digikey have really nice search capabilities.
jameco used to have that system, then somewhere along the line they turned to what they have now, so for me it takes for ever to find something just to get stuck with a 9$ shipping bill.
I was asking about mousers shipping cause last time i checked they did not offer usps, so therefore I keep going to digikey (usps shipping is like 2.5 bucks on small items, even on a rather large package it was only 4)