Our Vokera boiler is needing replaced soon and we are keen to go for either a Worcester Bosch or a Vaillant, will likely be a combi like the current one we have. We live in a 2 bed mid terrace with one bathroom and may extend into the loft next year (bedroom only - no space for ensuite!) if we decide to stay put in this house, though there's a good chance of us moving before then. Anyone able to offer advice on suitable models for our set-up? Thanks!