Just got a quote for e5,400 for 5 new windows and a upvc door. The windows are Vistatherm - and I am told are the best, if I can believe that! It is J...... Conservatories that are doing them and I know they are expensive. Got another quote from a guy for e2,800 for just the five windows. Need advice as to whether it is worth going with Vistatherm glass, is it actually the best? And, is it worth getting new windows. Windows in the house are 21 years old and seem to be draughty around the sides. Don't know how much difference new windows will make, maybe someone can tell me. We just moved and the house is cold, even the kids are finding it cold, even though it is mid-terraced, will new windows make that much difference? It's an added expense that we don't need at this time, but we can't live in a cold house either. As usual, any advice much appreciated.