Depending on what you want DFS are just fine. Like with any company there can be errors and delays but we are on our 3rd DFS sofa now and all have been delivered without any undue delays (last one came 4 weeks early!)
I would advise getting the sofa care, for the cost of the sofa, 5 years protection on any damage is well worth it.
The alternative route is to get a cheap second hand one, in between DFS sofas 2 and 3 we had a 3 seated 20 year old leather sofa and arm chair (did us for 2 years, sold for £10), £10. Then we had a 3 sweater double recliner, and 2 sweater recliner that was about 10 years old for £20 (had for 6 months, sold for £20) and a three seated fabric sofa for free, that we gave away for free.
Main reason we did the cheaply sofas was a young child, and all the joys that go with potty training, and food, felt tip pens, etc along with the hot being in a constant state of decorating for different reasons as well.
Good point - not sure. Did you manage to get anything knocked off?
Oh and you won't be able to wrangle a deal, or extra discount, or free sofa career anything. So your best option is to use the interest free credit and leave the money in savings. You can cler the balance at any time with no penalty.
I had cash, offered cash, even knew the sales man and said I would bung him half the saving if he could get me a discount and nothing.