240mm rad vs 360mm rad

[BFighter]

I know 360mm cools better, but how much better? How large is the gap between the two. I want to know because of this:
EK-Kit Supreme HF 240
€186,95
Radiator costs €49,96

EK-Kit Supreme HF 360
€214,96
Radiator costs €61,96

Difference between the rad prices: €12,-
Difference between the 2 kits: €28,01

So, buying the first kit saves much more money. The 360 kit is €28,90 cheaper than the parts apart from each other.
360 kit parts apart cost: €243,86 , saves €28,90
240 kit parts apart cost: €243,86-12=€231,86
231,86-186,95= €44,91
So the other kit will be €44,91 cheaper than the parts apart from each other. That's a difference ye..

Am I right or wrong??

O reminder:
I just wanted to know 240mm rad vs 360mm rad. The other stuff is why I wrote it :D

[JD]

If it's only for your CPU, the 240 is plenty. However if you plan to add in a GPU, then I'd suggest the 360.