aikido, and hapkido both come from daito ryu aiki jujutsu...they are probably more alike than most want to admit. but hapkido also incorporates strikes and kicks from other korean arts like tang soo do taekwondo, and tae kyon.
infact the original hapkido taught by yong shul choi actually was daito ryu. it has changed and grown since then into a unique art. but the basic principles are the same in both arts. but i think hapkido is better personally as its a more complete system in some ways. basically i think hapkido would work better for me.