Hostile im the other way around, i got into Advance Wars first, and i believe ppl here on the forums got me into Fire Emblem. I don't know which one i would choose, they are basically the same game with different rules and presentation, although Fire Emblem gives u a good story and character developments with balanced gameplay unlike the more wacky Advanced Wars DS.
I haven't had the time to get into FE

R yet but with less than an hour into it i think it'll get me hooked just like the previous installments.
I just realized something, i have Advance Wars DS, Lost In Blue, Fire Emblem PR, and CounterStrike CS (PC) taking up my current gaming fix, this is going to be a struggle for me to decide which one to play when the opportunity arrives. I can easily rack up the hours in any of the mentioned games. For heavens sake, last night as i was sleeping in my bed i played Lost in Blue for like 3 hours! <-----yeah i know that is counter productive to sleeping, lol. Pray for me, for i will most likely lose it just trying to pick which one to play.