Yes, it is a frequently asked question, but I think it's an important one. LED products will last for a long time, longer than most marriages. You want to make sure you pick the right one. I recommend that you select a 2700K version. This is closest to the color of incandescent light at full brightness.
One thing that people are finding out as they are buying LED bulbs and fixtures with integrated LEDs is that they don't get warmer in color when they dim, which can be a little disconcerting since we are used to incandescent light getting more golden as you dial down the brightness. This is why I would recommend the warmer color temperature. There are some manufacturers such as the Juno WarmDim and the Nora ComfortDim, which are recessed fixtures that give the appearance of changing color when dimmed. You might consider a type like this as an option. If you haven't bought the housings yet, I would recommend that you go with the 4-inch-diameter cans instead of the 6-inch-diameter cans. The larger diameter is more suited to commercial installations.