I have the original ghds and will only replace them when they are on their last legs. So when my mum told me that she had replaced hers with their newest model 'eclipse' I was so excited to borrow them.
The ghd eclipse is lighter in weight than the original and I think the plastic actually feels quite cheap. To be honest, I'm not a fan of the design in general but that's just my opinion and it doesn't effect the performance of the straighteners so I won't focus on that too much.
One thing that I do like about them is that they make a noise when you turn them on and off as well as lighting up. I just thought was a really cool feature (so easily amused). The brilliant thing about these straighteners compared to the originals is that they are much easier to hold as the outside of them doesn't get too hot. Ghd have used 'breakthrough patented tri-zone technology' which means that there are three heat sensors on each plate maintaining a constant heat of 185 degrees C. This is incredibly clever and means the straighteners are a lot kinder to your hair. I've definitely ruined my hair by constantly straightening it on an extremely high heat for years on end.
These straighteners are great and I did find that my hair stayed straighter for longer which meant that I didn't feel the need to keep using them (well...use them five times a day like I usually do). In the long run it would hopefully mean that you would straighten your hair less, making it less damaged.
Have you tried these straighteners? What do you think?