In the case of anime/manga, I don't think so. When I was younger, I didn't know what either was. When I was young, I watched cartoons/animated stuff in general. I didn't know where it was from, nor did I care, just as long as it entertained me. As silly as this may sound, when I first started watching Sailor Moon years ago, it didn't hit me that the show was dubbed over from Japan until older.
I also never preferred one country's series over the other. If it entertains me, doesn't matter where it's from. I'm like this even now.
That aside, I wish you the best of luck. ^_^