The Trangia lightweight stove is one of the product that has remained pretty much unchanged since its inception more than 60 years ago. The design is based based on simplicity without moving parts making them ideal for field use as there is almost no need for maintenance.
It is hard to imagine a camping and outdoor store without Trangia cookers, they are somewhat of an institution in the industry and are likely to form a reliable part of many an adventurers kit for decades to come. An investment in a lightweight Trangia stove is a long term investment into your outdoor lifestyle, it is likely to be passed on to your children, then your childrens children and even further, and perform just as well generations down the track as the day you first pulled it out of the box.