I've tried both of these. I had a AVRI Jazz bass that I replaced the stock pickups with Nordstrands. I loved the bass, but both pickups didn't quite do it for me. To be clear though, it was a super light ash/maple jazz, and I think the bass itself may have not played well with 70's wind pickups due to having some lows lacking just from the bass itself.
I do think that the Nordstrands sounded more immediate, and spoke more clearly. The bass I owned had a pretty great slap tone, but I found both sets to be lacking when it came to fingerstyle playing. Personally I would probably go for the Nordstrand pickups. The stock pickups had compressed highs, and didn't punch as hard, but both sets were similar in general flavor. Nordstrand really does something special with their coil shapes which give their pickups a more muscular type of tone. I've found this to be true with big singles, NJ4, NJ4 hum cancelling SE and SV types. While some people say they sound a little more polite, I've found them just to be smoother sounding that Fralins. They are also more even across the spectrum, which I've came to miss on my newest bass, which doesn't have them.