^I doubt House built his empire of "reformed" tribals by asking nicely. If you owe the Omertas money torture and blackmail are going to be familiar fixtures in your daily routine. There's no regulations on money lending and that money is their "property" as is whatever extortionate interest rate you're paying. Laisse-faire indeed.
Mr. House only collects tribute. The three families actually run the Strip. Personally, I'd rather not be slaughtered for meat, gunned down by mobsters, bought and sold as a sex slave, or killed in a snuff film, all things that happen under his watchful eye.
Based on prospects for long-term survival and probable employment, I think the NCR is the better choice. I'd imagine under Mr. House, I'd eventually get replaced by a robot.
If something happens to your or your family, Mr. House won't give a shit, I prefer the NCR for this, even though if I disappeared their bureaucracy would make them realize that like 5 months later.
NCR control seems a bit nicer. I feel like they'd help make it less dangerous and lawless, because Mr. House's only priority is him making money and it doesn't seem like he cares if gangs like the Omertas terorrize civilians if it doesn't affect his game profits. Plus I feel like the securitrons can easily be altered to betray House at a moment's notice.
Mr.House 
NCR
