The idea of a Baxi Maxflow combi was offered to me today as an alternative to a full-blown unvented (which was my plan) system. Having looked at the Baxi website it apparently combines a combi with a 54 litre unvented storage tank. Has anyone had any experience with them, either good or bad? I want all of my heating system in the loft, which rules out conventional vented system and I'm not keen on a pure combi system because of the hot water flow rates not being too low. This particular boiler seems to cover a gap in the market not covered by others. Apparently you adjust the temperature you want the water stored at and therefore if you store it hot enough, you'd need more cold water to make it a comfortable showering temperature giving better than combi shower pressure, which is what I'm after. It can replenish the stored tank back up to temperature in 4 minutes, but will heat as a combi would even if you exhaust the stored water.