The Cooler Master Nepton 140XL is a real high-end liquid cooling system, beating systems with 240 mm radiators. It is also very easy to install and very flexible, thanks to the holes that allow to install it with 120 mm fans. It means you can install it in a case with no support for 140 mm fans.
The only drawback is the high noise level when the fans are at full speed.
The Cooler Master Nepton 140XL is a great choice if you are looking for a compact, high-performance liquid cooling system.