Oh, I didn't mean to characterize D&S as a complete substitute for Rugby (which it certainly isn't), just for the fit (since the post before my last as well as a few others mentioned it) and a number of pieces, but as you mentioned, that's the case with most RL anyway.
Regarding the primary Rugby aesthetic, everything you mentioned would be better no doubt (except RRL? I guess the tweeds and whatnot). I don't care for the prep aesthetic and preferred Rugby's military/heritage offerings, so it's far easier for me to transition to a brand like D&S than someone who wore the tailoring/WASPy stuff. Sorry to cause confusion.
D&S is complete junk. I see these garbage in the outlet 70% off all the times. This label don't even remotely comparable to anything that RL makes. The quality is horrible. The details...what details !
RL had Polo Jeans Co which they shut off and replaced with d&s. Polo Jeans was street ware but some how a bit premium. I have some of their stuffs . And d&s is much cheaper than polo jenas stuffs. But quality and design stuffed. Anytime when I walk in to a rl store I can tell from distance which is d&s becos it looks cheap form miles.
PRL and Rugby is very similar. They use similar styling and materials. But 2 brands where were targeted 2 different markets. For example they would sale 2 jackets one made in Italy in PRL at $1k, where as they would sell the made in China version at Rugby for $400. By doing this PRL didnt have cheapen their images or prices to compete as a company.