Online Appraisals for comps???

I’m looking for the most accurate online appraisal website for comps. Could you pros please give me an accurate place to look for comps?

I have found www.zillow.com and www.ditech.com. Which one do you most experienced investors use, or do you know of a better one than these two?

I just looked up the same property on each site and zillow.com gave a comp of $78,124 and ditech.com gave $216,000 for the low end and $289,000 for the high end. Man what a difference between the two, there is no way I could use these two sites to give me an idea of the value and point me in the right direction. I want a site to use for negotiations to give ma an idea what the property is worth and then if I have to pay for an appraisal when I get the property under contract.

I appreciate all your help, input and knowledge.

JOhn

http://realestate.yahoo.com/re/homevalues/

and

www.homeradar.com

Da Wiz

Thanks da wiz I appreciate it!!!

JOhn