We are just looking to replace the windows in our house and didn't want to put white pvc in. We have spoken to 4 companies ... Enlightened Windows who are our favourite, Velfac who are cheap but I've read some pretty poor reviews for them , safe style and Everest . Both the latter were furiously expensive. We are considering composite windows which are made from wood and aluninium on the outside. Does anyone have any experience good or bad on the companies I've listed or any knowledge about the product?