Actually, I've been watching it since I was little because it used to be on TV. So my assessment here is based on my previous experience.
this is a pretty good anime and became my favorite show in the past with the concept of a transformer version of the VMMORPG game like S.A.O today. Of course the point of view is changing now that I'm getting older and there are many films with the same and better concept
if you've just watched this after you're over 13 years old you'll probably find this film no more interesting than ex arm or something because it wasn't meant for you and CGI wasn't as advanced as it is today.