My Mum had a WB combi fitted a couple of winters ago to replace the Biasi that was always giving her grief. It's been alright so far - when I had my bathroom ripped out a month or so ago I used to go round hers every night for a shower and it was perfect - nice and hot and very powerful. The bloke that fitted it fitted a wireless thermostat because my mum is either in her bedroom all day or the living room so she takes the thermostat with her into whichever room she's in to run it at her temperature. Probably inefficient and the house is like a sauna sometimes but she's comfortable and can afford it.