Apeks is a UK based company with a long diving history in the area and very well know for there high performance regs. Pretty much the go to iconic dive brand for British divers. Kind of like how you wont see a British diver with out an Otter, Seaskin, or O’Three dry suit. Additionally Apeks Reg‘s are still made in the UK (one of the few companies left that has not farmed it out to Taiwan)
Also in the UK/EU Apeks products are much more affordable readily available then in the US (I can’t believe how expensive Apeks items are in the US I would never buy them for the prices Apeks dealers are selling them for in the US) Apeks Is like the UK’s version of Dive Rite or Deep 6 or DGX.