We've had two quotes from each, both match but in different ways: Ikea cheaper kitchen but more expensive appliances (which we may be able to find cheaper elsewhere) and Howdens more expensive kitchen but appliances cheaper.
We know Howdens is easier to fit and is better quality long term but whilst their design was okay, Ikea was able to do a design that suits us just that bit better. Plus, their inserts, pull outs etc are fab and give us flexibility to change.
Would be interested to hear pros and cons for both. Please help us choose!