I just noticed on Rockauto.com that KYB has finally came out with their own version of the "quick-strut," called the KYB Strut Plus. They run $120 each and carry a limited lifetime warranty. They are P/N: SR4203 (two required to do both fronts) listed for non-Off Road, 2005-2012 V6 Pathfinders and 2005-2015 Xterras.
http://www.rockauto.com/en/moreinfo.php ... 91&jsn=391
http://www.kyb.com/products/strut-plus/