What are the top considerations for cyclists when selecting bike electronics and sensors, particularly for those riding in various weather conditions and seeking optimal reliability, performance, and durability? How do features such as ANT+, Bluetooth, and GPS connectivity impact the overall user experience, and which devices are known for seamless integration with popular groupsets and bike computers? Are there specific sensor types, such as speed, cadence, or power meters, that are considered essential for competitive road cycling, and what are the most reliable brands and models available?