I'll throw in my two cents since I finally got them. I like them both, for totally different reasons. I think it comes down to asthetic if you want to pick one. I went arcadia, because man I almost can't believe how much it looks like the line art. The dramatic swoops, nose and long wings in plane mode make it look like an aggressive animation angle shot come to life. The Bandai doesn't match that. That being said, the Advance fits right in with my bandai collection with its thin and sleek CG proportions. The Arcadia fits in with my 21, 19Kai and 19S. They look....a bit out of place mixed together. So, if you are Bandai centric with you collection, get the advance. But if I could only choose one, I'd pick the one straight out of M+ which is Arcadia.