I have been using the Leupold 3 series scopes for almost 35 years (Vari X-III, VX-III,and VX-3), and they have been consistently robust and reliable. I have only had to send two back for service due to knocks in the field, which were repaired as warranty and returned at no additional cost and back on the rifles in less than 2 weeks, including shipping by Canada post both ways!
The only Leupolds I have that are not 3 series scopes are a couple of VX-II's (one on a rimfire rifle, and a compact that came with a beautiful custom rifle I just acquired second hand), one Freedom rimfire scope, a couple of VX-Rs with Fire Dot reticles on lever actions, 3 VX-5HDs and a VX-6HD.
All of my Vari X-III and VX-III scopes have been upgraded to the VX-3 w/ B&C reticles, as I really like this simple BDC type reticle for hunting, as I am a set it and forget it guy. My one VX-5HD has the Fire Dot as it is on my 358 Win which really doesn't need a B&C reticle, but the other 2 are B&C reticles, and the VX-6 is a B&C Illuminated reticle. Leupolds have been my latest acquisitions, as I am impressed with the VX-5s and 6 glass quality, nd while a little heavier than the 3 series, I have mounted them on rifles where weight is not an overall concern, or the rifle was lighterso the the extra weight of the scope still ended up with an acceptable overall scoped rifle package weight. The glass is great, the scopes are light, or lighter than other comparable scopes, as I stick to 44mm objectives and smaller, and have performed for me very well over the years.
I have heard about issues of some of the newer Leupold 3 series scopes, but fortunately have not experienced any of these for myself. But as set it and forget it guy, (even on my VX-5s and 6, and I have yet to order a turret for my CDS equipped models) I am not constantly cranking on turrets for dialing for range (I use the B&C reticle even when at the range, as this is what I'll be using in the field while hunting), and checking and rechecking tracking everytime I go to the range (as I commonly see others doing; once is enough), which all puts additional stress on erector assemblies. My scopes stay on the lowest power setting until needed for a longer shot, or at the range for testing ammo or handloads. Moving parts is where things are apt to fail more often. As an old friend of the family once said, every thing only has so many twists, turns, pushes and pulls before it wears out; we do not have to do this unless needed to!
I do own other makes and models of scopes, such as Burris, Swarovski, Kahles, Trijicon, and Schmidt & Bender. I do prefer quality glass, as I hunt a wide variety of terrain (open prairie to alpine, thick timber and more open forests) and lighting conditions (first to last light, under all weather scenarios).
While I am not wealthy, this is my priority and I do spend the extra dollars on quality equipment that will provide decades of reliable service. And it pays for itself in the end. I also spent a number of years working in local gun stores, and am familiar with the older brands available at that time, and some of the issues that the newer brands were presenting as they were introduced. I know which brands I will stay away from. But this is just my opinion and experience.
In the end, I hope this and the other info shared here helps you determine if the VX-3 scope is right for you and your hunting/shooting style of practice.
Best of luck in your quest!