I've got 3 of the z5's that you mention. I absolutely think they are the best since sliced bread. I have no problem picking up a full field of view in the scope. In fact that is why I like them so much given the long tube you can get your eye relief just right. Lightweight at under a pound, hence the "Sheep Hunter". BT is very reliable. I use the supplied colored rings as opposed to an aftermarket engraved turret. I've been known to change loads in my rifles ( and swapping scopes to different rifles) and of course with the engraved turret you're limited to one load combination. Change loads or swap rifles and you're $100 in the hole with a useless turret. Hey, it's a Swarovski, enough said. As a side note, all 3 I bought on ebay. Factory demos, etc. Saved a good amount of $ by doing so to get into a great glass.