The top of the range in 4" reflux condensors is the Super Condensor. At 300mm long with 4 x 3/8th inlet/outlets and 9 tubes, this unit copes with the hotter summer input temperatures for those on recirculating systems.
For those with extra cooling needs, whether it means hotter summertime input temperatures or expensive water costs, the Super Condensor has smaller cooling tubes but many more of them. Extra length = greater knockdown power and less water usage.