JCrew broken-in t-shirts are my usual go-to. They’re not cheap, but there’s always a sale, and the quality is so much higher than anything sold in packs that it makes sense for me to just buy the higher quality item. Also lots of color options other than white, blue and black. As a bonus, you’re not dressed like a 14 year old at the skatepark.
Avoid anything “JCrew Outlet” because that shit is trash.