The V-Force 2's are adjustable for tension. They have a low setting and a high setting. The V-Force 3's aren't adjustable. They come pre-set from the factory, and there is no way to adjust them. I have the 2's, and I've always left them on the high setting. I'm not sure, but I think the 3's are on the high setting. Maybe someone running the 3's could chime in. I've had the 2's, almost since they came out, and I just changed the reeds for the first time, this last week. The carbon fiber seems to hold out for a long time, well at least the V-Force carbons do. Just my .02, get V-Forces, you won't be disappointed.