Which lighting fixture should I buy?

[CM125]

Personally I would recommend you save up a little and buy some proper lights, this is not a hobby to cheap out on, especially with lights. If you are set on getting something in the lower price range, I would still recommend going to your LFS and getting a T5 setup, cheap LEDs just dont work well. But even a decent T5 setup will be at least twice the price of those. You will not see the results you want with those lights and your tank will suffer.