Fluke 1587. It is also my backup DDM for when my 87-V gets wet. Both units have been great!! I've not had good luck with supco products and false or misleading measurement could make me look ignorant and cause more problem because i wanted to save a few dollars. I've even hear factory Carrier service tech making jokes about supco. They told me to throw away my capacitor testor.
I've never had any problem with Fluke products since i've began using them. I won't go any other way at this point.
I suggest wait for a great deal on a 1577 or 1587 and jump in on one.