I have the Infinite clone.
It suffers from similar issues as some have reported the original as having (a finicky button). From what I've read, the Hcigar has the same issue. It's perfectly useable, but it does have button issues if you don't push it in the exact center.
I can say that the Hcigar Brass Stingray is awesome.
The Hcigar 69 is also awesome if you side side buttons and/or telescopic MODs.
The Tree of Life from Infinite is currently my favorite clone. It's virtually identical to the original from what I could tell after having inspected both the original and clone side by side (I disassembled every piece). It's also the most attractive of my clones from my aesthetic point of view.