I've had it since around 2010 (15 years!). In terms of reliability, it is impeccable.
In terms of security, it is "relatively good" but always for its price. It is NOT the most suitable for security doors (obviously in larger sizes 40-50 etc.) but it is quite good for a common wooden door where at some point it is easier to break the door than the lock. It has a combination of features against common attacks that make it "relatively good."
It has relative resistance to "snapping" (snap), the main method of cylinder breach out there. Relative because, despite its reinforcement with plates, if someone manages to grip it well after snapping and wiggles it back and forth, it will split into two parts and open. So, as with all cylinders, we put the SMALL side (here the 28mm) facing outwards and make sure it protrudes just barely, if at all.
Other security cylinders have a "cut" to break earlier (and the thief loses their grip), which is probably safer, while the best ones also have reinforcement where the central screw grips.
In other features, if you look on the internet, it has steel PINs (anti-drill) and a ball for the same reason. It also has pin-in-pin in one pin and maybe that's why the foil-impression attack, which works on other cylinders, doesn't work here. Bump keys also don't seem to work on this lock. It's also relatively difficult to pick.
You can easily make keys everywhere because it's a very widespread lock.
In general, check YouTube for the security of the cylinder you choose. For the money it costs today, there are several options. Do your research.