I have a 4-16x44 V4 and have been very pleased so far. I've shot deer out to 425 yd and steel out to 700 yd using it and have no complaints. Admittedly, I have not shot it at longer ranges more than a few times, but so far so good. The adjustments seem precise and accurate. My brother has the VX5 3-15x44 and I have looked through both side by side and could not tell any difference, but it was in a neighborhood and it was only once.