Search here really frickin sucks -- I searched and almost decided to post, then browsed and found this topic

This was exactly what I was looking for -- but I call into question "Target" and such -- I'd read that before, that people just get prints done at local places, so I recently had some father's day stuff done at CVS. I couldn't BELIEVE how crappy it turned out. The images were dark and unclear -- not blurry, but, sort of like they were printed in a color palette with a lot less colors, and down-sampled badly (is that even possible).
My family maligns me for my high standards in pretty much everything, but this time my mother could clearly see it and my wife (begrudgingly

) admitted that they didn't look exactly right.
So, I'm sending a rush job off to AdoramaPix, which would have been cheaper, had I not waited so long and just relied on CVS.
From this, it's obvious that you can't just go ANYWHERE, so my question is:
Are particular stores are better because people are actually trained on the equipment/the printers are well maintained & calibrated -- OR -- are all of particular chain stores (e.g. Sams/Costco) better because they carry higher end equipment and yield nicer prints.