Sorry to be so frank, but IMHO you probably didn't choose the most reliable brands. I had 3 high-end HTC smartphones and one Huawei, which all lasted at least

Sorry to be so frank, but IMHO you probably didn't choose the most reliable brands. I had 3 high-end HTC smartphones and one Huawei, which all lasted at least 4 years of use. And the reason for retiring them was wanting better hardware, camera, etc., not really that they stopped working or became slow (there only was a "physical" reason in in the case of the Huawei: the screen broke in a fall and it was expensive to replace, otherwise it worked just fine). I don't have experience with Motorola, but from friends/family who have or had Samsung, it tends to be just... not good. Even if the hardware survives, which it not always does, after 1-2 updates they tend to lag like hell. I don't really get why they are so successful while e.g. HTC's smartphone business basically went under.