You'll get the full resolution of an active shutter display with the low cost of passive.
Samsung and RealD have created a new 3D technology that addresses and solves the biggest problems with both active and passive 3D. Specifically, the tech allows you to use the same inexpensive glasses that you get in the theater, but still get the benefit of a full HD picture.
The companies were able to achieve this by incorporating active shutter technology into the TV instead of into the glasses. It's a slick setup that should allow for a much better viewer experience. Sadly, it's not coming to large TVs just yet.
Samsung's new tech will start in 23 and 27 inch computer monitors, which should be released in early 2012. Only after the monitor roll-out will Samsung start working on the TV version - specifically in a 55 inch size.