Shop Taylor guitars with V-class bracing here: https://www.sweetwater.com/store/search.php?s=taylor+v+class
Bracing is the internal framework of an acoustic guitar that helps shape its sound. Although X-bracing has been standard in acoustic guitars for over a century, it creates an innate conflict between two key elements of a guitar’s sound: volume and sustain. The guitar's top (its soundboard) contributes to both. The flexibility of the top generates volume (projection), while its stiffness generates sustain. And with X-braced guitar tops, here's where the trade-off comes in: when something is made stiffer, its flexibility is reduced (and vice versa).
V-Class bracing changes all that. With Taylor's V-Class bracing, an acoustic guitar top can be both stiff and flexible — for more volume and sustain. V-Class bracing provides stiffness parallel to the strings for more rigidity and hence sustain. Flexibility on either side generates the air movement necessary for robust projection. It's the best of both worlds. This groundbreaking innovation also improves intonation; not only producing notes that are louder and with longer sustain — but more in tune with each other.