That second list... that's pretty much mine. Only it probably goes Chvrches, blackmill, purity ring, then like a couple robert delong songs and a ton of we are the ocean.
I don't know if you've seen alt-j on here. But I started out not caring for them a lot, but really getting hooked on them after hearing a few songs on pandora. I'm sure you like avicii. I'm a fan of circa survive as well, but I don't know if there in a similar genre.
alt-j: didn't hear of them before, but just listened to an album by them, approved! Gonna get some albums later and decide further :3 avicii: I don't know if i was too dumb to find the right one, or if I missed something, but the avicii I listened to on YT is on the radio here all over. So overkill anyway :D But their style is also a lot different from the the other bands mentioned so far. Given I only know 'Addicted to you' and 'Wake me up ' properly. I've also heard Silhouettes before, but that sounded more tranc-y, maybe I'll get an album later and check them out. Survive: Incredibly hard to find any songs with that name :D They also don't have a wiki article, so I can't search for their albums? Thanks for the suggestions!
http://en.wikipedia.org/wiki/Circa_Survive Circa Survive is the band name. There's the wikipedia article for them. No idea whether you'll like them or not. And yeah, you got the right avicii. The songs are overplayed, but at least they're good. Unlike most radio lol