I own a BTB Premium with the Nordstrand Big Singles. Though indeed they are great sounding pickups, but very susceptible to noise interference which a local bass tech said it is due to the fact that they are sorts of jazz singles on steroids. Even when I've set the pickup balance knob at center detent, which on a normal jazz bass pickup configuration the two equally set jazz singles would be like humbucking, the Big Singles can still pick up noises when played in certain places, but can also be no noise at all in other places.
With the last year introduced EHB series, Ibanez has chosen the Nordstrand Big Split. Obviously it's to address the noise issue the Big Singles were having. And for this year, Ibanez introduce the new Nordstrand Big Break pickups, which individually is like a P split coil pickup thus on it's own will also be a noiseless pickup.
So, if you are concern about the noise issue, then the new for 2021 mid level SR600E or Premium SR1300SB should be worth the wait. These two will be the first to come with the Big Break pickups, just as suggested earlier by @Yahboy.