Upgrade recommendation

[GureeOokami]

Hi everyone, I'm new here just looking for a quick recommendation.
Thing is, I've got this issue with RAM, namely, I've got 2x4GB of 1333MHz Kingston RAM installed and with gaming I've never had any issues, not that I noticed anyway, but I've been working with After Effects a little lately and it crashed due to not having enough RAM. Now, upgrading to more RAM and faster one seems like a logical thing to do. What should I aim for 2x8GB or 4x4GB, also, which brand, clock speed? Btw my CPU is i7 4790 (non K) and motherboard Z97P-D3 (GPU, although irrelevant I suppose, is GTX 960). 
Thanks in advance.

[Starelementpoke]

6 minutes ago, GureeOokami said:

Hi everyone, I'm new here just looking for a quick recommendation.
Thing is, I've got this issue with RAM, namely, I've got 2x4GB of 1333MHz Kingston RAM installed and with gaming I've never had any issues, not that I noticed anyway, but I've been working with After Effects a little lately and it crashed due to not having enough RAM. Now, upgrading to more RAM and faster one seems like a logical thing to do. What should I aim for 2x8GB or 4x4GB, also, which brand, clock speed? Btw my CPU is i7 4790 (non K) and motherboard Z97P-D3 (GPU, although irrelevant I suppose, is GTX 960). 
Thanks in advance.

Get another 2x4 set.

[Matias_Chambers]

6 minutes ago, Starelementpoke said:

Get another 2x4 set.

1333 MHz is a bit slow, it would be better just to get a new 2x8 kit, it isn't that expensive. 

[Matias_Chambers]

Get this: http://pcpartpicker.com/product/r3Crxr/corsair-memory-cmy16gx3m2a2400c11

[GureeOokami]

Thanks for the answers