So many bands end up being classed at 'emo' these days. However, personally I agree with most of those in your list as being 'emo' or 'screamo'.
Read more about emo screamo music on my site: www.soemo.co.uk
Taking Back Sunday - Sonisphere @ Knebworth UK.
I like a lot of their songs, but they were weak live. I'm not sure if the main guy had a bad throat, there were issues with the sound setup or they just aren't that great at a festival.
If you didn't know already the current venue for the O2 Academy Birmingham is being demolished.
From the end of September, the new venue will be to the former Dome nightclub premises in Bristol Street.