The Leupold Yosemites are a great little bit of glass. You aren't missing anything. Fairly inexpensive porro prism binoculars perform at a level that is equivalent to roof prism glasses that are two to three times their cost. Porro prism binoculars are just easier to manufacture. The light path from the objective end to the eyepiece is also "simpler" meaning that the image tends to brighter and sharper...assuming the quality control is there.

I actually prefer the 6x30s to the 8x30s but many folks feel 6x is too little magnification to be sufficient for different types of hunting.

The drawbacks of the 8x30 is the smaller exit pupil thus poorer lowlight performance. Other than that you really aren't missing much.

If you are interested in the Yosemites you might also check out the Eagle Optics Raven and the Vortex Raptor. They use the same basic design as the Yosemites but they have been "tweaked" a bit to get slightly better optical performance.

Oh, and the field of view issue has nothing to do with the prisms. Field of view is almost totally the result of the eyepiece design.

Hope this helps.