What are the key differences between the Speedo Vanquisher 2.0 goggles and its predecessor, and how do these changes impact the overall performance and comfort of the goggles, particularly in terms of anti-fogging, UV protection, and peripheral vision, and are these upgrades substantial enough to warrant the increased price point, or are there other goggles on the market that offer similar features at a lower cost, and what are the long-term durability expectations for the Vanquisher 2.0, and do users need to take any special precautions to maintain their optical clarity and extend their lifespan, and how do the goggles perform in extreme weather conditions, such as heavy rain or intense sunlight, and are there any notable drawbacks or areas for improvement that Speedo could address in future iterations of the Vanquisher goggles.