The Royal Enfield Classic 350 is a popular choice for both daily and long rides due to its comfortable riding position, classic styling, and reliable performance. However, the "best" variant of the Classic 350 for these purposes can depend on individual preferences and requirements.
That being said, the Classic 350 Signals Edition and Classic 350 Redditch Edition are two popular variants that offer additional features and unique aesthetics. The Signals Edition, for example, comes with dual-channel ABS, a unique matte finish, and a host of touring accessories. The Redditch Edition pays homage to the original Royal Enfield motorcycles with its vintage-inspired color schemes.
Ultimately, it's advisable to visit a Royal Enfield dealership and take a test ride to determine which variant of the Classic 350 suits your needs and preferences the best. Additionally, you may consider factors such as comfort, performance, available features, and any specific requirements you may have for long rides.