I have never understood why shops that claim to specialize in printing don't do things correctly.
If your shop has a printer, a spectrophotometer is a must-have tool. If you are relying strictly on the manufacturer profiles, you are doing your customers a disservice, so proper media profiling is also a must.
Sure, you might get lucky for a while and get the vibrancy and proper colors you're looking for but- eventually- those profiles will become obsolete in regards to your particular machine.
Please note OP, I am not picking on you, I'm just making an observation.
I, too, have worked in shops that do the same thing (buying used equipment and expecting nearly impossible results, not maintaining equipment properly, etc. I have argued- unsuccessfully- with former employers regarding the necessity of the proper tools to achieve the results they wanted. And this issue is one of the reasons why these are former employers (though not the only one, for sure).
Thankfully, the company I'm with now is serious about colors, color matching, and quality- and has the necessary equipment. We also do daily maintenance and try to keep the shop in proper condition with daily cleaning.
Most any printer can give great results, if it's set up and run properly.
(Except the orange thing. Yeah, oranges are a pain!)