I have an Huskemaw , several leupold mark 4's and a couple Swar X5's. My husk has always tracked perfectly. However, because I use my guns mostly for hunting, I look at low light performance with glass. I have compared these scopes by looking at my 1000yd target during various dusk conditions (all scopes x 20x). My huskemaw is close but not as good as my Mark 4's. It isn't even close to the swaro x5's.
I have no experience comparing my huskemaw to the newer Leupold HD series. However several different Leupold tech support personal have told me that the newer HD series does not have as good of low light glass as the Mark 4's. However, they have better high sunlight resolution.