Should I get the Cooler Master Sentinel or a Gigabyte Ghost M8000X mouse?

I'm getting a new mouse for my 16th birthday, and I've been looking around on the internet for about a week now and have pretty much narrowed it down to these two mice. I've looked at the microsoft sidewinder x8, the razer mamba, logitech etc, but I really like these two. Now, from what I can tell, they are very similar, and I really like them both. If I had my way, I'd get both, but I can't afford that right now. So, I'll have to choose one. Has anyone got one or both of these mice, and is willing to tell me which one they think is better? Because I honestly can't choose. The sentinel looks cool with all the flashy lights, but the ghost has an awesome shape. I'm not into hardcore gaming, so the difference between the sentinel doing 5600 dpi and the ghost doing 6000dpi is not important for me. I'm more of just a casual gamer on PC. Any suggestions on which one I should get?