I would recommend GHD too, had mine for 4+ years and it still works perfectly. It is pricey compared to other UK brands but is totally worth it in the long run.
Just a little tip, if you are going to buy straighteners don't buy directly from the company's website because it works out more expensive. I bought mine from - Jason Shankey for GHD hair straighteners, Darphin, Tigi, Loreal and NV Perricone. and i saved over £10 even with P+P..... Of course if your not broke like me then it doesn't matter where you get them from