Our CDA kit been great, dishwasher had a fault, fixed as per the guarantee (paid for callout), turned out to be the fitters fault & supposedly a guarantee voiding option (there was a sign saying "DO THIS after installing")
The engineer fixed the 'fitting issue' then fixed the fault, can't complain about that.
CDA: diswasher, dual ovens, hob & fridge/freezer been in since xmas before last, came at a price we could afford, though I'd hardly suggest there the best about.
Must note for next time we get a kitchen (15-20years time!) 'fitted' fridge/freezer units are a LOT smaller than normal ones.. doh! (old one now installed in the garage as beer fridge & extra freezer space)