RE: Which Field box??
I have that hobbico complete feild box kit with the starter and everything in it. It's a good value, but don't plan on carrying all your tools in it, it's kind of small. I usually carry a couple screwdrivers, my glow ignitor, starter some misc. stuff, voltometer, quick charger, and rubber bands. That usually fills it up pretty well. My only gripe aside from the size is you are stuck with those little 12v batteries to run the panel off of. After going through 2 of them, I switched to a bigger more powerful jumpstarter thats like 400 amps. the battery compartment is basically wasted space unless you are using the supplied battery.