I switched from Tesco deliveries to Asda. I’d been with Tesco ever since they started deliveries, but during Covid, I couldn’t get regular slots and nothing near Christmas. I could get an Asda slot, so I did my whole Christmas shop with them. They offered me a delivery pass. I asked Tesco if I could have one, and they said no. I took up the Asda delivery pass. I found the Asda website much better - with Tesco, my order was in the order I made it, all higgedly piggedly. Asda automatically sorts my order into departments, so I can look at say what I have ordered from the fruit department and see if I have missed anything out? Much better! I am really grateful to have a weekly delivery at a time of my choosing!
Imo, the ready meals are not as good, but most of the own brand and the big brand name stuff is as good as anywhere else! We top up, using Aldi, Lidl, Tesco, Sainsbury’s, Morrisons and Waitrose (for a few ready meals).
Which covered this last month. Iirc, M & S came out the best, although not on value for money. Aldi came second, as they are better value for money. Lidl came a little further down, like 4th or 5th.