[outworlder]

Do you really need >16GB to be considered 'pro' these days?

You can have 64GB on a MacPro. Hope that's 'pro' enough.

[chiph]

I run several VMs at once on mine, and 16gb is constraining. Put me in the "the Pro is no longer so Pro" camp.

[eropple]

I regularly have six to eight virtual machines in flight at any given time and never feel constrained. Are you sizing them appropriately for their tasks?

[nsxwolf]

128GB if you use slower ram.