Danger Den has ONE product they make themselves that is worth it. Thier GPU blocks are nice. I have used DD GPU blocks for a few years, but now I'm liking other top competitors.
They don't make radiators
Their latest (TWO years old CPU block is wayy behind the newer stuff
They don't make pumps
So, buy DD, it works, but there is SO MUCH more out there.
Please start at the top of this forum
"READ FIRST", and start learning PLEASE for at least a FEW WEEKS before you commit to buying.