wow. These types of questions sadden me.
Renting it out is the way to go if you just HAVE to buy something.
But keep in mind you're buying an investment. It's a THING. It's value is based on what the next person will pay for it.
You aren't in financial distress - you just want to take advantage of other low prices. Do you throw away all your food in the freezer everytime there's a sale in the grocery store?
That may be ludicrous, but so is your solution of walking away/short sale/etc. Not only will this demolish your credit - but what is the real world implication? Simply stated - you bought an item hoping it would be valued higher when you sold it. It's value is currently low, so you now you HAVE to sell it.
Why? Because it's value is lower.
Does that affect you? Nope, but it's value is lower.
What would be your advice if you bought stocks? Buy high, sell low? Of course not.
So I know this is your house. And I know the people on the TV and radio are saying all kinds of silly things. But please - look at the whole situation, not just some made up number of "value".
Who cares if I say it's worth $1,000. It still provides shelter and does all the things it's supposed to. Not only will the market come back, but really focus on whether your investment strategy is truly "buy high, sell low". If it is, I'm sure you'll have no shortage of people willing to pay lower than $165.
Yes - lower. There is nothing magic about it's "worth" being $165. It's only value - the ONLY number that counts, is what the buyer pays. Forget the appraisal, forget the economy.
You want to buy b/c the economy sucks and you can get bargain prices. Don't you think that's who's going to buy your house? Shoot - you might even get offers of $125, then you'll REALLY be motivated to sell, right?
I sincerely hope you can rent it and buy another. Well, I hope that A, you can afford that scenario (and plan for worst case when you have no renters). Otherwise, you're just selling things out of restless wallet syndrome - there's other stuff out there to buy, so forget that my house is an investment - sell it at a loss so I can make money on the next one!