my first thing to tell you is that if you dont have 1200 dollars worth of hardware, dont even bother with lights especially not with that low quality case. upgrade those before you even bother
now, for the lights.
LEDs are brighter, way longer lasting, less power hungry, and wont have random spots where the light is dimmer than other parts. they are a little more expensive. if you are going to do this, you may as well do it right. the ones id get are the bitfenix alchemy LEDs. best ones out there
cathodes are cheaper to begin with, but after that, they are inferior in every way