those AiO kits are crap.
for just a little more, you can get a kit from alphacool or swiftech. those are really high quality.
Of all AiO, IMHO, the best option is Artic Liquid Freezer. Performs better at lower noise and comes with double amount of great fans.
Just to make it clear, all of them are made on the same two factories. asetek is the most common.