Aikido happens to be the best martial art for me.
It can be categorized into several different schools:
"Old schools" - Aiki-Budo, Yoseikan, Yoshinkan
"Modern schools" - Real aikido
"Traditional schools" - Aikikai, Iwama-ryu
"Ki schools" - Shin-shin Toitsu Aikido
"Sport schools" - Tomiki-ryu
There are three aikido clubs in Sarajevo that I know of. The following are links to their web sites: