Folk Pop bands

Help me find addctive, uplifting indie pop/folk bands to listen to on repeat!
Over the last year I've gotten into music in a huge way after years and years of pretty much only listening to Coldplay, Barenaked Ladies and Yann Tiersen.

I'm making a lot of use of last.fm and have found loads of new music I like that way. But the bands I love and am addicted to have actually been suggested to me by friends, mostly missed by last.fm, which seems to focus more on the folky side of my tastes.

Right now I can't get enough of:

Cherry Ghost
Tired Pony
Elbow
Broken Bells
Yeasayer
Mumford & Sons
Seth Lakeman
Stornoway
Beirut
Fanfarlo
The Leisure Society
Aqualung
Avett Brothers (But mostly the last two albums)

These bands will cheer me up and put a spring in my step every time I listen to them. Which similar music does that for you?

How would you describe my taste? I think I like catchy tunes and rhythm guitar, mandolins and a lot of bass, but that could be a lot of things.

I'd love to find more music like Tired Pony, Elbow and Cherry Ghost. Can you tell me some more bands that I'll be compelled to listen to all the time? Bonus points for the ones like Yeasayer and The Avetts who kick ass live. :-)