I am an aircraft mechanic and as all mechanics know your box is your livelihood and I am looking to upgrade finally from my Kobalt 11 drawer box to a wider, deeper and better quality box. We get a Snap-on truck and a Matco truck at work and started looking at the MATCO 5s and the Snap-on KRL series box's. Anyone have both and prefer one or the other. Or had one and got the other. After doing alil research I am leaning towards the Matco 5s, but the KRL series just seems like too good of a box to pass up. I am looking to buy a box that lasts me a very very very long time. So which do you prefer and why?