I have two VX 111 in 1.5x5, and one vx11 in 3x9, all over 15 years old. The 1.5x 5s see heavy use, and have never had any problem, the 3x9 not as much use but the same.
my 2nd 1.5x5 I bought used, and gave Leupold a call inquiring about having the scope gone over before mounting on a 45-70, to ensure no problems. Of course, they said, send it in and you will have it back in a week, no charge. It is very difficult to beat that service. I have 100% confidence in them.