Have 2, a 1-5 and a 2-10. Both CDS Firedot. No issues at all yet, owned them about a year now. I do not twist turrents much. Also have 2 Zeiss Conquest scopes to compare since you specifically mentioned them. The VX-5 scopes are the clearest and brightest scopes I own. I have compared them at dusk and dawn to the better scopes I own and no that list does not include super high end Swarovski, Scmidt & Bender, Nightforce or Zeiss Diavari. But it does include Bushnell 4200's, Nikon Monarch's, Leupold VX-3's and the already mentioned Zeiss Conquest's.
Have owned Leupold scopes for over 40 years. The only problems I have had in that time was an ocular lens on a Vari X 3 came loose and a power ring on a LPS that became very hard to twist. Both issues were taken care of promptly and to my satisfaction by the Leupold lifetime warranty. Neither caused an issue during a hunt.
