There is so much adjustment with the door hinges. Not only are you needing to get the door to fit the opening correctly but aligning the axis of pivot of both hinges to be in a straight line through each other. Just getting the door gapped is a pretty challenging task, especially for the OCD.
But even with the door in the perfect location the door hinges may not actually be in line with each other If they are a little off the hinges will bind a little. Normally you would never really notice this, the door might just feel a little heavier. But to lift the door off a set of binding hinges, it won't want to go. You have to get this alignment right. It's not anything you see (as in the door gaps) but what you feel (the binding).
Personally I feel the stock style hinges with that little ¼" pin are the worst. It is a lot of work to land the door on that pin, in 2 locations, at the exact same time. This is where I like the Duff hinges better. They don't have stainless (but I have seen regular steel sanded and polished with a shot of clear coat look like it). The pins being twice the size of other makes of lift off hinges makes for landing the door much easier. Probably aids a little in the aligning as well (I don't think they are as sensitive)