Hi, I wonder if someone can help! We are replacing an old baxi boiler behind a gas fire and have an existing water tank. We were thinking of getting a combi boiler as we don't have a massive house...3 bedrooms, one bathroom and a shower room. I however am worried about whether the water really gets hot enough and if you have to spend a fortune to get a good combi with a good flow rate! We just don't know what make to choose...we have about £800 to spend. Any help would be greatly appreciated!!