Not long been there myself (heading home through Italy atm). Bosnia and Montenegro blew my mind. Did you cross the border at Hum and do that road down to Pluzine n over Durmitor? Ooh and the Albanian road with the serpentine climb/descent?! I could talk all day about these places!
Just wrapped up a week of touring around Montenegro, Albania & Kosovo. 530km-ish and over 10k meters of climbing.
Would recommend.