I hate to say it but I have to.
Don't invest in a PS4, I've had one for 1yr 1.5 months.
I had purchased it in September, in the following January it overheated on its own and was sent in for service. They swapped out the main board and instructed me I would have an additional 6 month warranty added on.
Everything was good until Friday, when the dreaded fan noise started and it melted down again. This happened after Sony support was closed so I had to wait until Monday to address the issue.
The story isn't all bad though.
I called Sony, the rep then told me my unit is 1.5 months out of warranty because the "6 month" addition was actually only 3 months and not tacked on to the end of the term but ran with the original warranty and ended 3 months after it was returned from service.
To make a long story short, I asked to speak to another rep who may have authority to make decisions the first rep may not be able to, the supervisor asked about the issues and contacted marketing at corporate and they agreed to send another box out to ship my unit to repair and they are sending me a brand new unit instead of repairing this one.
The ps4s are expensive, and there are known widespread issues like the one I mentioned ( it's actually pretty common ) but, when it works, it works great.
Sony stepped up and was willing to correct the issue so they deserve recognition for the service. The hardware really does need some work though.
With Christmas around the corner, I know there will those who look to purchase the unit. Hopefully this will make people more aware of the issues the ps4 does face.