I bought HM about 2weeks ago and I am extremely happy.
Before that I was using PT3 but had a lot of problems with HUD and so on ...
Now that I moved to HM everything changed
HUD is perfect for me, there is aslo "table manager" which show me how many short stacks players sit at my tables ( perfect when I multitable ).
Even their support is awesome ... I formated PC and needed to change license, they replied within few minutes.
They even provide so much useful help information for beginners(like how to properly understand HUD stats ... )
Speed with newest postgres is also insane
In my opinion HM beat PT3 in almost every aspect ( at list for cash games ).