True Religions are shitty jeans for the price you pay. The quality of the denim is poor & they're not how they used to be. Plus they just look stupid now, especially the older you get.
Also, the jeans you posted up as "designer" are ugly as fuck.
Next, if you want good jeans, invest is Ksubi, N&F, Dsquared2, Hudson, Dior Homme, etc. Those are good "designer" jeans. Selvedged denim & raw denim will usually cost you more but good jeans are an investment.
Lastly, don't buy bootcut unless you want to look like a dumbo.