Redundancy?

Hello friends! I currently rotate between the Nike Structure 25 and Hoka Mach X 2. Training for a half marathon. Is something stable neutral like the Rocket X 2 or Endorphin Elite v1 necessary or just plain redundant considering I find the Mach X 2 quite fast and comfortable for long distances? For reference, I’m 5’11, 175 lbs. easy pace 10 min/mile. 5K PR 26:58. Thanks!