I find they are a nice balance between the Nordy Big Singles and DCs. It is hard to describe the tone, although the "complex" descriptor works well. I have 3 May custom basses that are Nordy equipped. For my 6 strings, I have the Nordy 3 band with the DC pickups, with 3 way switching (Series/Single/Parallel) for each pickup. For the fretless, I love the bridge pup in Series mode. For my fretted 6, I often split the coils into single coil mode, though it is pretty thin sounding in comparison to the Big Singles in my Lakland. The BigRigs give more of the single coil clarity, maintaining a fuller than the DCs in single coil mode, but not quite as punchy as the big singles. I think they are a good all around pickup, and sound great digging in fingerstyle. For slapping, I still prefer the Big Singles, or maybe even just some standard J-bass singles. But I definitely like the Big Rigs. You made a good choice. Congrats on your upcoming bass!
Here are my Nordy equipped basses. The Mappa Burl 5 string has the Big Rigs.
View attachment 3306532