The Nord pre is pretty pure: set flat you really "don't hear it."
It doesn't have a ton of range like the Aguilar stuff does, but, it has plenty of useful range: you can't (IME) use lots of the Ag preamp without it being too much. It "sounds passive" to me, whereas the Ag/Sadowsky stuff sounds really active. Good, but, active.
The Big Singles are fairly much "pumped up J pickups."
Deeper, shiner, grindier, broader frequency response than your typical standard Fender J issue stuff. Same tonal family though.
Thanks! That makes a lot of sense. I have heard the "Big" series is fatter/deeper/bigger down low and shinier/extended up high. But grindier? I would have figured a single coil J would have more grind. Thanks though, good to keep in mind.