OpenStudio versus Trane Trace 3D

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Hello all,

I have access to both Trane Trace 3D and OpenStudio. I am fairly new to HVAC design, so I at this point in my career, I am open to learning new software to advance my ability to design a good system. I am struggling to find anywhere online, a pros and cons of using Trace 3D and OpenStudio. Other than the customer support associated with Trace 3D, what is the benefit of Trace 3D (which is very expensive) over OpenStudio?

Thank you in advance.