The battle of the supermarket self-scanners: From Marks & Spencer’s unmanned checkouts to militant Aldi and Waitrose carrier bag hell – MailOnline reveals the best store for a quick getaway (which took just 43 seconds)…which do YOU think won?

Self-scanning checkouts in supermarkets have become retail’s hot potato this week, with customers split over their potential benefits. Marks & Spencer was slated on Tuesday as their devices were branded…