Could someone please give me some advice on getting a PS4?

I’m thinking of getting a PS4 (Playstation 4), and I have a few questions that I would like your help on:

1. Based on your experience with the PS4, what are the pros and cons of that system? Any quirks I should be aware of?

2. What gear or equipment would you recommend I get beyond what’s included in the box?

3. Are the following games any good?
* Batman Arkham Knight
* Madden
* Uncharted
* MLB The Show

Note: I am deciding between getting a PS4 or not getting one. For various reasons, I have already ruled out getting a Wii U or an XBox 360, so a discussion of the merits of those systems would not be helpful.

Thanks.