So interesting how we each handled the zoom lens overlap! I also had the 24-120 f4 and 70-200 f4 with my D750. I decided to keep the 70-200 and sold the 24-120 in favor of the 35 f1.8 and the (then new) 24 f1.8 primes, wanting the larger apertures and lighter weight in that focal range. Whatever works for your needs, right?