Which resistor do I need?

Hi,

Added a few caps to my ESC, but from the past I know there was always a big spark. So I decided to add a resistor, but I don't know which one I need. I looked on BrianG's site, it said I needed a 7Ohms, 200Watt resistor. Is this right?
I'm using 10S LiPo: 37V nominal, 42V fresh of the charger. And got about 7000uF of capacitance.
And which resistor do I need? There are so many different types of these things

Thank you,

Patrick