http://www.cheapassg...&postcount=1011 <-- page 51 :P
Co-Optimus Gunstringer review
It's a similar length to Child of Eden. 4 hours or so to just finish the levels, but many additional hours to get gold medals on them and unlock stuff. The production values, including live-action cinemas all over the place and constant narration, would never be possible on XBLA. Also, the downloadable Wavy Tube Man Chronicles (30-40 minutes long and very silly) and Fruit Ninja make it an even better value.
Thanks. Just pulled the trigger. Should have it in a week.