I recently decided to change vendors for my MLS search on my various websites: www.socalistings.com, www.ellisposner.com, www.90278realestate.com, www.90266realestate.com and this one.
I used my previous vendor for about 6 years and being the loyal kind of guy that I am, I would have stayed with them even longer. Truth of the matter is that their product, while it offered many great features was just slow. Things came to a head for me last month when their tech support tried to convince me that a 5-10 second response time, with no counter, was acceptable. No way.
If you would like to check out the new MLS search, here's a link to my "beta": http://tinyurl.com/socal-IDX.
It also appears in the post immediately preceeding this one.
I'll be integrating this tool into the other websites and transitioning over the next month or so, meanwhile I'd love to get your feedback. I think it's a killer app for MLS search.
Some other tools you may also want to check out.
For a market snapshot-trend report of prices and other real estate related info, try http://tinyurl.com/socal-snaphot (LA area only, sorry). To search foreclosures, this is a good one, http://tinyurl.com/search4closures.