Just my five cents but I have found unfortunately brands will change their quality over time and not always for the worse, so just buying based on a brand name is rarely reliable. 10 years ago I bought Calvine Klein underwear and still have some of those to this day, but 5 years ago the quality changed a lot and the few I bought have cycled out. (I live in Australia btw) I've basically had to become good at judging the quality of a garment on factors like feel, washing instructions, thickness and weave. I like quality cotton best.

A few years back Superdry was making amazing T-shirts with really good weave cotton. I went crazy and bought 20 and none have shown any sign of wearing out despite daily wear and washing. Unfortunately their underwear, though decent, wasn't as durable.

Eddie Bower long sleeve tops I bought while on a USA trip from an outlet they had have served me amazingly well. They were super discounted and being pushed out but to me felt like the best quality they had in the whole store. Their "new season" range at the time was worse and expensive but the 5 dollar tops I bought are still going strong after 5 years.

So I guess what I am saying is I buy clothes in store only because I cannot trust brands to be reliable.