i went down the road of buying cheap heaters, i bought 6 jebos when i first got bigger tanks. while they were working the tank temp would vary by 3 or 4 degrees before they would turn on. after two years they all pretty much failed within a couple of months. After the sometimes stressful times when they were working & the pain of having to replace them immediately when they failed i went for the jagers. since i started using them the temp only drops around 1 deg or less before they click on & they keep the tank to the temp i want it at. I know they will last for years longer than the jebos did, i have an old jager i estimate is around 7 years old & it still works perfectly. I am sure jagers have failed occasionally but recently i have heard of a few old green ones being sold, they must be 10 years plus old so that is a great sign.
they may well be, other equipment they produce is well designed & made with good quality materials. The tank i have has been brilliant, the hood is made with aluminium & screwed together with stainless steel screws. they allowed gaps for after market plumbing of a canister into the hood & the cabinet panels are wrapped with foil to help prevent water damage. i cannot find anything wrong with my tank & i have had it for around 4 years now.