I think without mentioning about the brand names and model names, it's important to try it out ourselves before buying a mask, even there are some good reviews... first is the skirt fit, second is the nose fit, when I squeezed my noise with my fingers with the mask on, I realized that some masks would allow me to perform the complete nose block better than the others. Check also the possible leakage at this point if you will, this is rarely mentioned. Then the view angles, yes, the low volume in general does mean that the lens is closer to the eyes thus bigger view angles; however, the shape of the lens as well as the shape of the frame, as a whole, would determine how "clear" we can see through the lens. This is very hard to explain, let me use some examples.
For the low volume masks, even some newer models may not be doing as good as the old ones, even though the new masks claims to have a bit bigger view angle (vertical angle and side angle). e.g. some masks have side lens, supposingly this should increase user's vision at the side; however, practically, when the vertical edges connecting the front lens and the sides lens are wide, that part of the view (around the junction edge between the side lens and the front lens) is gone. Another example, when we keep our head fixed, and look to the furthest left and right by moving the eye balls only, we would realize:
1. For high volume masks, when we rotate our eye balls to the far right or left, eventually, part of the edge vision will be blocked by the side wall of the mask. Low volume is better in terms of this.
2. The edges of the lens closer to the noise area is blocking one of the eye.
e.g. when we look to the far left, moving eye balls only, the right eye vision would eventually be blocked by the edge around the noise. Sometimes, when the right eye is completely blocked by the noise edge, our brains would automatically adopt the left eye vision almost completely, depends on how bad the right eye is being blocked, as a result giving a more overall vision, rather than if the right eye is only partially blocked (imperfect overlap vision).
I would like to stop here, if you put on very different types of masks, you will see what I mean.