Buying an RC helicopter, please help?

I wanted to buy an rc helicopter so that I can attach a wireless button camera to it and sneak up on people, and need help making a purchase.

apparently there are different types of RC options such as gas/nitro, electric, 3-ch, 2-ch, 2.4ghz, miniature. etc…

This is what I need:
-A quiet helicopter (Ninja-Stealth)
-A stable helicopter (otherwise camera will shake uncontrollably)
-A sturdy helicopter (should be able to withstand a few bumps - im a beginner)
-A run-time of about 15mins.
-Color doesn't matter I plan on spray-painting it black later on anyway,

Thank you for your help.
yes, it does sound a bit creepy.

But I'm cool like that.

If you want a good quality RC heli, go to xheli.com. They have a huge selection of RC Helis, replacement parts, upgrade parts, etc. If you are a beginner just know that flying is A LOT different than an RC car. I've been in the hobby for 15+ years and the heli has been the hardest to learn. So sneaking up on people is going to take some practice. And the bigger the RC heli is, the easier it is to fly. So the junk you see at Walmart and Radio Shack isn't going to cut it for what you have plans for. But the RC's on xheli aren't made to be flown inside either. They do sell the smaller crapier ones but really, you get what you pay for with those. So you might sacrifice the Ninja-Stealth for quality. And adding a camera is adding weight, so it will be harder to control if it's a smaller heli. Anything made from plastic and falling from the sky isn't going to handle a few bumps either. Expect to break parts, a lot. But if you get a good one from a hobby store, replacement parts are readily availible. Walmart and Radio Shack don't sell replacement parts. Hope this helps!