Spy-Plane:

3 Kill Streak

Shows enemies as red dots on radar.

Radar "sweeps" showing locations every few seconds.

The more Spy-Planes up, the faster the sweep.

Does not show enemies using Ghost.

Can be shot down.

Blackbird:

8 Kill Streak

Shows enemies as red arrows on radar, so you can see which direction they are facing.

Radar is in real-time, so there is no "sweep"

Shows enemies using Ghost.

Cannot be shot down.

Mario Kart 7 for sure! If you want to know more, I wrote a review about it here! :D

Also, The Legend of Zelda: Ocarina of Time is awesome!

You're comparing apples to oranges here.

Sweet! Now go post it on the blog so Vonderhaar can see! :D

I've created a blog posting here discussing what the fans want to see in Black Ops II!

Go to the blog and post your comments! I plan on tweeting the entire blog post to David Vonderhaar so everyone's voice can be heard! :D

If you're looking for a challenge, Super Meat Boy!

I'd also recommend the Sonic games if you've never played them before. My favorites! :D