I've played all the armored core PSX titles (AC, AC: Project Phantasma, AC: Master of Arena) and PS2's Armored Core 2 and 3. I REALLY like the series, but it just seems like the same game over and over with relatively minor improvements. However, because I REALLY like Armored Core, I'm still going to eventually buy AC2: Another Age, AC: Silent Line, and whatever came out this year. Has anyone here played these ones, and if so, any noticeable changes?