We ordered an Ikea kitchen last autumn, ( it was fitted in Feb this year) not realising that the whole system was about to change. The new carcasses, as far as I know, now have a service gap at the back, and come in different widths.
The experience was a nightmare, but much of this was due to the system changeover. We spent many hours at the Croydon store trying to sort out various problems, and were given a certain amount of compensation.
We didn't have any Ikea appliances and they charge quite a lot to install other brands. We did order a made to measure worktop from them, and it had been installed before we saw it, it's the wrong one. We were compensated for that but it's awful and I can't face having them back.
Their fitters were great and made the best of things, but were sick of Ikea as well. So many wrong deliveries, so much bad communication. An hours delay on the phone every time there was a problem.
All in all, I would say that it was a very bad experience and I wish we had gone elsewhere, but a lot of this was due to unfortunate timing. For obvious reasons they didn't announce the changeover until it happened.
The best thing about our kitchen is the depth of the drawers and cupboards, now that they have the British style gap at the back, that probably no longer applies.
I don't think that this kitchen will last as long as our old cheap MFI one, bits have already fallen off. Not happy at all really. Sorry.