The Bose Noise Cancelling Headphones bose quietcomfort 45 vs 700 are both top-tier options. The 700 boasts sleek design, touch controls, and impressive adaptive noise cancellation. Its advanced microphone system ensures clear calls. On the other hand, the QuietComfort 45 maintains Bose's renowned noise-cancelling prowess with improved comfort and longer battery life. The 700 offers a modern aesthetic and touch-sensitive controls, while the QuietComfort 45 focuses on classic comfort and exceptional noise isolation. Ultimately, the choice depends on preferences – the 700 for a contemporary experience, and the QuietComfort 45 for those prioritizing comfort and exceptional noise reduction.