I like the bulky spreads as well, although I haven't tested it recently. I find the orb set useful because you can hit hard as soon as the status kicks in. With the lefties set you have to boost once just so you can 2hko Florges with Megamiss. Since many people like to switch Florges into Hera (often thinking it is scarf I suppose) you can lure and kill the flower with a +2 facade, instead of dealing a 2hko after a SD. And once Florges is dead it can really pave the way for other threats to clean up. Since my team was having trouble with Florges cores I stuck with the Orb Facade set and haven't looked back since.