I've cycled through nearly all of three as I live in vests under clothes for breastfeeding so need longline and spaghetti straps, M&S ones are now short and 'flappy' I've found, matalan too baggy, H&M super thin and not that long, haven't tried primark, never seen any in asda, simoly he has some 'longline' that were shorter than the ones from M&S now but ok if you don't want long, next longline have been a recent great find albeit they're very very long