If you are looking for the cheapest, I guarantee you are going to have issues with the property you buy. It seems to me you will be just asking to have yourself a title issue.
Most title companies will be pretty similar as they are charging the standard rate. Where it is going to differ is closing fees.
One of the ways not to get screwed is to contact the title company and ask them if they charge promulgated rate (the minimum amount that the state requires for title insurance) the fact that you ask will show them that you know what you're talking about and help keep your costs down.
You can also negotiate the closing fee. (Just cause it may be their standard doesn't mean you can negotiate)
Also, you could negotiate in your sales contract that you will only pay up to "blank" for closing costs and no more.
Then it won't really matter what the charges are as you will have your set amount that you will be paying.