Hey there! As someone just starting out in industrial automation, I totally get why you're asking this - it's easy to get caught up in the upfront costs when you're new to the field. Based on my research and industry insights, here are the 3 most critical but often overlooked factors you should consider:

1. Ecosystem Lock-in & Long-term Support

This is huge! Choosing a PLC brand commits your facility to that vendor's entire ecosystem - their software, motor drives, HMIs, technical support, and spare parts supply for the next 10-15 years. Siemens and Allen-Bradley have massive global support networks, while Mitsubishi might have more regional variations. Ask yourself: How easy is it to get local technical support? What's their track record for long-term parts availability?

2. Software Environment & Learning Curve

As a fresh graduate, this directly impacts your career development. Siemens' TIA Portal offers a unified engineering environment, while Allen-Bradley's Studio 5000 is industry-standard in North America. Mitsubishi's software might be more specialized. Consider: Which platform will give you the most transferable skills? How steep is the learning curve, and what training resources are available?

3. Scalability & Future Integration

Think beyond your current production line. Siemens excels in large-scale, complex systems with excellent scalability. Allen-Bradley dominates in North American manufacturing networks. Mitsubishi often shines in high-speed automation like packaging lines. Ask: Will this platform grow with your company? How easily does it integrate with Industry 4.0 technologies and other systems you might add later?

Remember, your choice today will shape your maintenance costs, troubleshooting efficiency, and even your career opportunities for years to come. It's worth taking the time to look beyond the price tag!