Madewell and J Crew, no. J Crew quality went notoriously downhill about a decade ago, although they claim to be improving it. Ralph Lauren, it depends - there are several sublabels, some are good, some less so. RL Black Label is good, and occasionally I've found it on sale enough to make to worthwhile.
That said, I think there are other brands at around the same price point that do last longer. I wear a fair amount of Pendleton, Boden, Theory (on sale), and Brooks Brothers. Talbots is also generally pretty good quality, although I don't find that they are cut to suit me. None of these brands are perfect, but the average quality is way above Target or Old Navy.