Also worked at a company that eliminated the PTO benefit. That's essentially what "unlimited PTO" means, you are no longer guaranteed that any time off is paid,

Also worked at a company that eliminated the PTO benefit. That's essentially what "unlimited PTO" means, you are no longer guaranteed that any time off is paid, since it's explicitly at the discretion of your manager, and it no longer accrues in the event you leave or the company folds. This is usually combined with "unified time off" policies in which there is no defined sick time off either. The only exception, really, is time off mandated under FMLA. If I'm negotiating comp with such a company, I would add what would normally be the PTO I would receive at a place which has it as a defined benefit and use that number as what I would need to be offered in order to accept a position there.