You can get some pretty good sound from those analog inputs. docks are available for most "Ipod/MP3" type devices to send a line level signal to those analog aux inputs.
As for games and video, unless you want multi-channel sound, I think you're wise to concentrate on a very good two channel unit like this.
Since they don't waste any money on throwing in stuff that is needed for multi-channel processing, like three or four more amp channels and a processor, you get more two channel "bang for the buck". These goodies don't add to the basic sound but rather addto the cost.
If two units, stereo and multi-channel, are the same price, which do you think will deliver better sonic performance? To get comprable performance in a multi-channel unit, you'll have to seriously up your budget.
Of course, if you see multi-channel in your future for this system, you might want to rethink your goals here.