Most Boeings are now on the cross-hair system. V-bars were used more often in (as we say..) the old days. Some systems have both and can be selectable. Many operators and POI's determined on low visibility approaches (RALM) it was difficult to determine the "gap" between the chevron (v-bar) and a/c symbol (triangle) accurately enough to authorize RALM. This was particularly noted on, what was then, newer EFIS displays where the color saturation made the differential line mostly impossible to perceive and view. Therefore the split cue system lives on! Buy a HUD