That's easy - one who specs or advises you on the best parts for you, your riding and your budget. One who builds the wheels that are correctly built with sufficient tension, equal tension, stresses relieved, spokes bedded and rims acceptably true. Their wheels wouldn't go out of true or tension during the life of the wheel (unless the rim is bent) and if this happened, the wheels could be re-trued (due to lubricated nipple threads).
All this is easily doable by the home wheelbuilder and doesn't have to be the sole domain of some acclaimed mystical "guru".
All this is easily doable by the home wheelbuilder and doesn't have to be the sole domain of some acclaimed mystical "guru".