The Bridgeport Series 1 is a highly regarded milling machine that has gained a reputation for its reliability, versatility, and widespread use in various industries.

While it is considered a very capable milling machine, whether it is the "best" mill around depends on specific requirements, preferences, and intended applications. Here are some factors to consider:

1. Legacy and Popularity: The Bridgeport Series 1 has a long history dating back to the 1930s and has become an iconic milling machine. Its popularity and widespread use have resulted in a large user base and a vast amount of knowledge and support available.

2. Versatility: The Series 1 offers a versatile range of capabilities, allowing for various milling operations, including face milling, end milling, drilling, and tapping. Its variable speed control, power feed options, and multiple spindle speeds make it adaptable to a wide range of materials and cutting requirements.

3. Rigidity and Accuracy: The Bridgeport Series 1 is known for its robust construction, providing stability and rigidity during cutting operations. This stability contributes to precise and accurate milling results, especially when working with tight tolerances or complex geometries.

4. Ease of Use: The Series 1 is known for its user-friendly design and intuitive controls, making it accessible to operators with different skill levels. The machine's simplicity and ease of operation contribute to productivity and efficiency.

5. Aftermarket Support: Due to the widespread use of the Bridgeport Series 1, there is a strong aftermarket support network. This includes readily available spare parts, documentation, and an active community of users and experts who can provide guidance, troubleshooting, and modifications.

While the Bridgeport Series 1 is highly regarded, it's important to consider specific requirements, such as the size and capacity needed, the complexity of the workpieces, and any specialized features or functionalities required for your milling operations. It may be beneficial to assess alternatives, explore other reputable milling machine brands, and consult with experts or experienced machinists to determine the best mill for your specific needs.