Hello, I'm looking forward to buy an auto bed leveling sensor, I have seen this one and also this: http://www.geeetech.com/lj12a34zbx-npn-dc636v-inductive-prox-
imity-sensor-switch-for-p-1024.html?zenid=ovnuaus6vt9hjhk4sh-
8cb06d52 . which one would you recommend this, or the other?