Overall impressions: meh. Most songs are very generic and not really interesting for me. Some performers like the Azeri lady and that very Swedish looking Swede were pretty, but their songs were bad, and I wouldn't vote for them because of their looks alone.
Russia's Lazarev was OK, but because people in Europe hate Russia and Russians with a burning rage of a thousand supernovas (especially those who watch ESC), he has no chance in hell of getting anywhere near the first place. Guaranteed 12 points from Belarus, at the very least.
My favourites are Georgia's Muse-like song and that Cypriot rock band, but they won't get anything either, because it's not the genre the voters like.
P.S. Serbia and Ukraine, following the direction the wind is blowing after Conchita Wurst, brought very progressive topics to the Eurovision - Serbian song was about domestic violence, Ukrainian one was about evil Russians being evil; and both were very mediocre, because they apparently expect people to vote for them out of solidarity. I miss the times when ESC was about songs...