I currently try to stick with brands I'm familiar with because I know which of their sizes fit me. It can be frustrating trying other brands just to find out their size XYZ is not the same as another brand's size XYZ. The most difficult thing to gauge is when they list a size as S, M, L, XL, 2XL, 3XL, etc. It is anyone's guess as to what those correlate to with any particular brand. When they list measurement sizes it is a bit easier, though different brands might cut the pieces for pants, shirts, etc. differently so even if the waist and inseam sizes are the same, the fit can be totally different. So Amazon Wardrobe's generous return policy should make trying other brands less risky. I was a bit hesitant to try other brands up until now because I did not want to return too many items and get dinged. So I played it safe.