Me and my GF toured through Serbia 2 years ago. We faced the same dilemma as you do right now.
We went along Danube from Budapest all the way to Romania. Serbian people are great, I mean really great, and it was especially nice since Serbs love Poles :). We crossed Croatian/Serbian boarder in Backa Palanka. Because the traffic was rather busy we took a detour to Fruska Gora National Park, there was no traffic but you go up and down all the time and the sights weren't anything special. On the next day we took a train between Nowy Sad and Belgrad because it was pouring with rain that day and the roads were very busy. Belgrad is a nice city to visit, you could really feel the "Russian atmosphere" there. Its filled with great modernist buildings, but if you're not into post-communism architecture you might find it hideous. Check out "Nowy Beograd" on the google graphics. Free walking tour around Belgrad was great (there were several to choose from, we chose the one that took us to the places connected with the war in the 90s) and talking with the guide was really eye opening (especially on UN bombing of Belgrad and their connection with Russia). The countryside wasn't especially spectacular (definitely got less industrial the closer we got to Romanian boarder). It was very industrial and there was a lot of trash everywhere (even more in Romania). An impressive Gas-prom refinery was on the way, but not really a tourist attraction.
This was a fun trip, but I'd go along Croatian coast if I had to make that decision again.
Me and my GF toured through Serbia 2 years ago. We faced the same dilemma as you do right now.
We went along Danube from Budapest all the way to Romania. Serbian people are great, I mean really great, and it was especially nice since Serbs love Poles :). We crossed Croatian/Serbian boarder in Backa Palanka. Because the traffic was rather busy we took a detour to Fruska Gora National Park, there was no traffic but you go up and down all the time and the sights weren't anything special. On the next day we took a train between Nowy Sad and Belgrad because it was pouring with rain that day and the roads were very busy. Belgrad is a nice city to visit, you could really feel the "Russian atmosphere" there. Its filled with great modernist buildings, but if you're not into post-communism architecture you might find it hideous. Check out "Nowy Beograd" on the google graphics. Free walking tour around Belgrad was great (there were several to choose from, we chose the one that took us to the places connected with the war in the 90s) and talking with the guide was really eye opening (especially on UN bombing of Belgrad and their connection with Russia). The countryside wasn't especially spectacular (definitely got less industrial the closer we got to Romanian boarder). It was very industrial and there was a lot of trash everywhere (even more in Romania). An impressive Gas-prom refinery was on the way, but not really a tourist attraction.
This was a fun trip, but I'd go along Croatian coast if I had to make that decision again.