It is difficult to say, from one bad experience, that the new FF is not reliable, and then to generalize.
It can happen with any watch from any brand.
The most important thing is to know if the brand can solve the problem, in my opinion.
What I heard from many modern FF lovers is that their watch works flawessly.
The movement is the strong point of this watch, an excellent evolution of the famous and very nice 13 RO.
Everything has its price, for sure, but I don't think this is a model to avoid.
Hope this will be of some help,
Best.
Nicolas
