(I'm going to start with some of my favorites from 2010)
letLive. - Fake History
letlive. is probably one of the best modern post-hardcore bands, and the real kind of post-hardcore (think At The Drive-In, Glassjaw, Refused) at that. It seems like there has been a void in good post-hardcore in that vein since the early half of this decade but letlive. seem to be out to change that. Fake History is one of the most addictive and ferocious post-hardcore releases since Glassjaw's "Worship and Tribute". The vocals range from barked out yells to growls all while showcasing some of the best songwriting in a genre frequently devode of originality and integrity.
The Chariot - Long Live
The Chariot got their start as one of those christian metalcore bands that were all the rage last decade it seemed. Long story short, they released three albums and they were all horribly generic, average at best and terrible at worst. Between their release last year and this year's they unsigned from their previous label, switched to analog recording and apparently listened to a LOT of Converge. This new album exhibits that chaotic kind of hardcore style that Converge, The Dillinger Escape Plan and Gaza have perfected but has an overall positive kind of feeling. Trumpets even sneak in on a few tracks. This is definitely a leap in the right direction and it is worth checking out despite what you may have heard about this bands' previous work because they sound like a completely different band now.