[BIGchris]

What was I thinking waiting til this time of year to buy them!

So the 120v version has the npf ballast and the quad tap has the hpf ballast with capacitor correct? Is that the only difference between 120 and quad tap?

Thats a big 10-4 there buddy! The only difference between a npf (normal power factor) and a hpf/quad tap (high power factor/quad tap) is the hpf/quad tap uses a capacitor that allows the light to run on lower amps.