To me, buying an LV isn't just about the bag, it's the entire experience, personally, i find the experience of walking into the store, browsing, playing with the bags then walking out with something i fell in love with in store is more addicting than just buying the bags. Which might explain why my brown boxes still give me a thrill just looking at them, and the others from
gucci,
prada, BB etc don't make me as happy (my dad brings them back from his business trips to Europe)...
I strongly suggest going in store, especially for your first purchase, go in there, look around, play with a couple of bags, have fun. After that, if you decide you need more LV, you can always buy it online or from lv.com
As for shopping in store, go to both Nords and the flagship, that way you can observe how the SAs treat you and other customers, pick a friendly, professional SA, that way your shopping trip will be perfect