There are two stores in the centre of Rotterdam, one older one tha sits there at least for a decade, the other is new, chain type of store.
I bought my latest mbp 17" hi-res at the chain store, and it was only because it was an EOL and had a very very nice price.
All my other shopping goes to the older store. The people aren't that young, beautifull and flashy, but the tend to know their business.
If they don't know it, however trvial, they insist on looking it up.
They made a mistake ordering a new fan for my old MBP that was getting noisy, so they called me up, told me they messed up ordering the wrong one and told me I could get an other machine while they ordered a new one (i didn't need it, so i thanked them).
My collegua had a MB, wanted to upgrade to 2Gb mem, needed a new battery (within three months it did a sudden death, darn) and the white palm rest needed replacement. He bought it at the chain and got back there for his much needed repairs. Well, he was told that the battery was his fault, the palm rests would take up to three weeks, possible longer and the upgrade would need to be done seperatly. huh?
He called me, angry, I told him he had Apple Care, and needed to go to the other store.
The could most likely do it within two weeks, did the mem upgrade as well, the battery was a simple replacement, just the palmrests needed ordering the parts.
He could get a replacement if he needed, but they would ask something like 5 euro's a day. They where very sorry, but it was to cover the minimal cost.
Thing is, the part was there next day, repairs done the following day and within 4 day's he had his own MB back, al nice and shinny and working.
So the quality from one or another store can differ dramatically. I tend not to go to chain stores when I have specialized equipment or questions.
If you want just a loaf of bread, you can get it anywhere, if you want a really good loaf of fresh abbey bread, you get to a good bakery.