bobsmum, I don't think the conplaints were about the quality, more the price and the sales people. If you were happy and feel you paid a fair price, no problem.
Personally being 'in the trade' as it were I would not touch any of the big boys (Magnet etc) as I think they are overpriced and inflexible.
WHat is your budget? If you have around £10K look for an independant local kithen co. Try the KBSA - kitchen bathroom bedroom specialist association - to get recomendations of memebers. This is a body that makes sure cowboys can't be memebers.
If your budget is less than IKEA are supposed to be good quality, but there are ALWAYS bits missing which is a pain in the . B&Q takeaway range is pretty good, also easy to pick up more bits. MFI can be sporadic! They can be brilliant, and they will arrange fitters etc. A lot is down to the fit of the kitchen, rather than the unit costs. I spent £12k on my kitchen with about £2500 for the units, £1500 for the cooker £2000 for the granite worktops, about £4000 was fitting/building work, and electrics. But this included building a wall, re wiring the lighting in a big kitchen/diner, new ceilings etc etc. and £2000 on other appliances (fridge/sink/taps/dishwasher etc)
Where are you? I could try to get a specific recomendation if I know where you are and approx budget.