Which knife would be the best knife to have, which one will last longer, wont break, and which one is durable

here is the first one

http://cgi.ebay.com/Stiletto-Spring-Assisted-Black-Wood-Pocket-Knife-NEW_W0QQitemZ220530930054QQihZ012QQcategoryZ43335QQcmdZViewItemQQ_trksidZp3286.m7QQ_trkparmsZalgo%3DLVI%26itu%3DUCI%26otn%3D4%26ps%3D63

here is the second one http://cgi.ebay.com/Spring-Assist-OPEN-Knife-9-Stiletto-Blade-Switch-BK_W0QQitemZ350299102638QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item518f741dae