All 3 are very similar in terms of quality. Get a quote from 1 and take it to the others to price match. Whoever does your kitchen will most probably have an account with one or all three and may offer you some of their discount
good luck

All 3 more or less the same in terms of quality. I believe I can get better prices for a like for like kitchen at howdens compared to the other 2.
Howdens are down the road for me and any problems they're on my doorstep to sort it out.

Benchmark or Howden’s
Wren have poor quality units and very slow support service
Had very bad experience twice
Cost wise not as cheap as they seem

They are all similar as regards quality and price. In my experience Howden's and Benchmarx offer a much speedier resolution if something arrives damaged. This is an important factor to consider when making your decision. Wren can take up to 2 weeks and their aftercare service is not as efficient as Howden's and Benchmarx. You can generally pick up anything damaged or missing on the same day which is a big plus for both the customer and the fitter as you avoid unnecessary delays.

Wren do not have trade accounts for kitchen fitters but a fitter with a Howden's account will generally have a Benchmarx account and you will be able to benefit from their trade discounts. However, all three companies will price match.

Howdens is one I’d recommend will price match but if you orderd Monday you’d get Tuesday if anything damedged Thay have stock to change straight away for you iv used them for over 18 yrs Briliant will price match aswell plus anything over will refund aswell free surveys defiantly howden s anytime
Andy am builders