Similar features on the Toshiba 2450 I have, one button switches between built in screen and rgb port or both at once.
Most notebooks have almost identical features these days,it is very difficult to make a decision ...
I hope to get 3 years use out of this unit at the very least... I know people that have models from 6-8 years ago that are still working fine . This is actually thier problem because they want the old one to die so they have an excuse to get a flash new one
I say whatever one you choose make sure you get an extended warranty becasue parts and service on notebooks are very pricey compared to desktops.
Regards,
Wicked1