As FMJ noted the "straws" are for paint protection, donuts also work... there are also other paint protection options if it is important.
For cables and housing, I use Shimano housings mostly. If you can find Dura Ace or XTR for a good price (at a good price the premium is not too large) and in stock (COVID shortages and all) in the colour you want go for it. Personally my go to these days is the regular Shimano housings I can buy by the foot at my LBS when I need it in almost any colour I want but I stock a couple bikes worth in black. Cables I usually get at MEC and I stock pile a bunch when I go (house brand, good price/performance IMO) but after the changes there I do not know if these have also changed??? Like anything it is diminishing returns from the premium top end to the regular stuff and most will never notice (or appreciate) any difference--but sometimes premium just must be had for marginal performance gains, placebo or bling, totally get it... In the end routing etc. is more important once you exceed a certain min quality.
I have tried a huge number of brands and combinations, the above just works and works extremely well at that!
With the decent quality regular stuff there is also another advantage, it is easier on the mental wallet to swap it out when there is any decay in performance as opposed to keeping premium on after the performance has decayed because of mental replacement cost... (this is very common BTW, we are not pros).