KK_777

Hello all, we are considering quotes from our installers for the above ASHPs, with or without a 250l Mixergy tank. I am generally of the impression that the Vaillant pump is better, but it is about £1200 more than the Mitsubishi without the cost of building its own little platform and soakaway in the garden (which I have yet to get a quote for). Would be most grateful to hear people's views / experiences on: - The relative merits of Mitsubishi Ecodan vs Vaillant aroTherm - which would you guys choose, taking account of the price differential? - I assume the mixergy would definitely be a good add on for the Ecodan, but I haven't seen anyone talk about it in combination with the aroTherm - any thoughts on this combo? Thanks in advance.