I don't have a blade and I've never tried one but I have owned other Razer products including a headset and three mice. Their things have a tendency to fall apart and feel cheaply constructed.
From what I've seen on the internet the razer blade notebooks biggest issue is its trackpad. And it may seem silly that something so small, something that takes up 5% of the total computers volume could matter so much to whether it's worth purchasing or not, but it does and I wouldn't buy a notebook that has a less than perfect trackpad.
In my opinion it's one feature that Apple gets 100% perfect every time and I've yet to see a PC notebook with a trackpad anywhere close to Apples.