How much complexity will your family tolerate?
Basic control systems use familiar (and proprietary) push-button remote controls that are easy enough for anyone to operate, so long as you don’t mind another clicker or two on the coffee table. In many (not all) cases you can program the codes from these yourself into a universal remote, such as the ones that control your A/V system.  More elaborate control systems use custom hand-held or in-wall keypads, sometimes substituting iPhones and iPads.  It all sounds cool, but even the prettiest interface can’t make complex ideas completely simple. Before you pick a system, try to see it through the eyes of the least technically oriented member of the household who will use it.  Will they be able to work things when you’re not home?