ECN should be a legit vendor, talk to your boss. You'll get a reciept, that should be all they are worried about.
Even if you go over the $150 allotment, save your reciept. Chances are that you can deduct anything over the $150, off your personal taxes at the end of the year. So don't skimp out, get what you need and get something good.
Be aware that some digital meters are slow to measure hundreds of volts AC. Like several seconds. You could see "120" as it works its way to "277". And you don't have to be a rocket scientist to know what would happen if you confuse 120V wires with 277V....
Togol, it's hard to suggest, not knowing what you already have access to. If you already have a clamp-on ammeter, that Fluke 110 looks like a good choice. But if you don't have a clamp-on, consider one that also comes with test leads for other DMM functions. The 110 max is 10A AC or DC. I take a Fluke 187 into the field but I can always bum an Amprobe if I need one. Joe