What are the main differences between Alfine and Nexus internal gear hubs for bicycles?

The main differences between Alfine and Nexus internal gear hubs for bicycles are their gear ranges and design. Alfine hubs typically have a wider gear range and are considered more durable and higher-end, while Nexus hubs are more budget-friendly and have a narrower gear range. Additionally, Alfine hubs often have a sleeker design and are preferred by more serious cyclists, while Nexus hubs are popular among casual riders.