we are saying the same thing John

what I'm saying is pay the bottom price and theirs no chance of getting an all round decent product & installation, pay more and you have a lot better chance of getting a good result... 2, 4 or 600 notes more its very little compared to what hassle a lemon of an installation with a nasty boiler bunged on the wall can give you during the expected life time of a modern boiler, 15 years would be good these days...