at least the Revolution will plug straight into a computer monitor

And hopefully the Game Boy Evolution, or Extreme, or whatever will come with cables to hook it straight into a TV or monitor... or better yet, the GBE and Revolution could just be able to connect out of the box, meaning you could run your GBE on a TV/monitor through the Revolution, meaning if you have both you don't need to buy a freaking 50 dollar accessory just to play with a revolution controller or on a TV...
Of course the best deal would be if the Revolution just played GBE games directly...one less system to buy