Is "unlimited PTO" ever not window dressing for a more predatory policy? Anywhere I've worked with this policy had implemented it so that ever taking vacation was a negotiation with your boss (not something you could just comfortably declare), and it led to not being paid for any surplus vacation days (as none exist but an "infinite" amount) when you do finally leave said job because of burnout.
Anecdotal data point to the contrary: the company I work for switched to "unlimited" as of the 1st of last year. I took more vacation on the unlimited plan than I used to than I had on the accrued-PTO plan (4 weeks vs. 3). So it can happen, if the culture is right, and you have a manager that actually understands the value of vacation for both the employee and the employer.
It can be good. I've had it a couple of places, and never had to do any more "negotiating" than at my job before that had regular metered vacation. Now that I'm somewhere that's not in the really early stages, where I'm not solely responsible for as much stuff, it's pretty easy to just say "hey, I'm going to be out a few days next week" or "hey, this is the time I'm taking off over the holidays."
What's rare, but an extremely nice bonus on top, is when you get to "accrue" a small amount (maybe a week a year) as well that you never dip into but's there to be paid out to you when you leave. But that's not something I'd expect to be able to negotiate for at my next job, so if they didn't have it I'd try to just get a bit more salary to compensate...
