I agree, every place offers something different and unique but they all all incredible, although I am a bit biased since my parents are from Portugal.
I went a few years ago for a Eastern Europe road trip. It was probably the best trip i have been on (although that had a lot to do with the people I went with and met during the trip). We were moving around a lot, but got to see some pretty amazing stuff. I am sure you will love it when you finally get a chance to get there.