Both include Balanced Optical SteadyShot, which moves the entire lens module (not just specific elements) for much more effective stabilization, especially when zoomed in.

ENGADGET: Sony Handycam PJ790V and PJ650V get brighter projectors with HDMI input, we go hands-on

We had an opportunity to check out both camcorders, and were quite impressed, especially when it came to the Balanced Optical SteadyShot and (relatively) powerful built-in projectors.

ENGADGET: Sony Handycam PJ790V and PJ650V get brighter projectors with HDMI input, we go hands-on

We were't able to record and review footage, but zooming seemed smooth and responsive and the Balanced Optical SteadyShot appeared to assist with stabilization, especially when zoomed in.

ENGADGET: Sony introduces Balanced Optical SteadyShot for well under a grand with CX430V, PJ430V Handycams (hands-on)