Never had a problem with my Delkims, other than my own stupidity, like leaving flat batteries in, or breaking the battery connection wire, even then the repair was cheap and quickly done by Delkim. Purchased I think in 2000, still working, still on my buzzer bars, or banksticks for pike fishing.
Oh yes, my nice carp alarms get battered and bruised, covered in mud while pike fishing as well.
Please don't make me laugh about Fox alarms, I have worked in tackle shops since 1995, and the most returned faulty alarms were Fox, number of Delkims returned were minimal, in fact I honestly can't think of any.
Do your Atts have vibration sensing?
No? Not so reliable then are they
The number of fish I have caught on semi-fixed leads when I have not had a proper run from the vibration sensing, when line movement is just noticeable, and you can put the sensitivity down enough so that ignores waves, but still picks up fish indication. With almost all other alarms you have to have a proper run, or dropback.
What is the big saying?
Oh yes, 'if it ain't broke, don't fix it'.
Because Delkims aren't broken they have no need to try to fix or bring out a new alarm. Saying that, even then, they managed to bring out the more budget EV range, which is still better than most other alarms on the market.
Maybe because Fox is broken they need to bring out a new range every few years, or maybe its because they want to con you out of more money. Money, which to be honest, you have no need to spend if you have a proper decent set of alarms in the first place.