Should I spring for a second Blu-ray player of some kind, or should I just get an upscaling DVD deck?

ENGADGET: Ask Engadget HD: A second Blu-ray deck, or an upscaling DVD player?

Also available in Spring will be a lineup of Mastered in 4K Blu-ray discs from Sony Pictures' Colorworks Studio.

ENGADGET: Sony launches the Bravia KDL-W900A LED connected 3DTV at CES