Question about Sony PS4 Pro + 2x Controller

The Ps4 Slim is the normal ps4 just a little smaller.
In contrast to the normal version, the PS4 Pro has better hardware, i.e. it is more powerful and faster. The Pro is also 4k capable.
I would recommend the Pro, just because it has 1TB of storage....from my own experience, I know that the 500Gb are quickly crammed.