Bounen no Xamdou, Break Blade 1: Kakusei no Toki Recommendations
If you are looking for a mecha type Anime with great animation, characters, and narrative to boot! These two are definitely for you. If you like Bounen no Xamdou, you are bound to like Break Blade and it's following sequels. Make sure to check them out!
These 2 series are very good to watch and have a weak romance plot but the main plot is really interesting