The warranty company who has the most contractors willing to work with that warranty company is probably the one to use.  However, when I talk to clients about home warranties, NONE of them do a very good job.  Many companies have a fancy brochures that describe everything they cover and all the bells and whistles.  Basically, your buying it for any issues that arrise with your furnace, A/C. or water heater.... and maybe an appliance or two.  Any claims on anything else and good luck.  They'll tell you they don't cover it in the fine print.  This is from our own personal experience with a warranty.  Oh, and when your water heater goes out on the weekend, don't expect them to RUSH right over either!  Oh, and when you have a water well issue, don't tell me you don't cover it because you don't have a well contractor lined up in our area yet.  If you don't, then stop advertising that you cover water wells.  Do you want me to contiue on or do you get the picture?

There are many home warranty companies out there.

Blue Ribbon in our area is great.

Minnette Olsen They all have their plues and minuses. Read the policy carefully to see what is covered.

I use Globe Warranty out of FL.

It depends.  Some agents swear by "CRES" plans because they have CRES E&O insurance and if you sell one of their plan, they waive your deductible for the transaction.

There are three providers out here, one of which is American Home Shield.  Google them.

Out of the other two providers out here, I find both are good.  Some have more service providers in certain cities than others.  I've had great experiences lately with Fidelity and I have several policies with them.

They are all limited in scope.

I get them one so I do not want to get blamed or getting calls...

I always get a no ductible coupon. 

How do you define "best"?

The best one out there is the one that does the work promptly and efficiently.

It depends.

Ask your broker.

Minnette Olsen - Not sure if it is best or not, I have Home Warranty of America.

They all have a gazillion loopholes!  It depends entirely on what your client is buying (or selling).

I agree with Ronald Gombach 

There are several good ones and I like Old Republic and use them 75% of the time.

To each his own...

We use American Home Shield and I have had good luck.

They all have their strength and weaknesses 

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I guess it would depend on what the client wanted in a home warranty program. I'm not too familar with them. They aren't big in my area...and I don't know why. 

Survey active agents in your market area Minnette Olsen 

I give the buyer a list and let them pick.

Not sure there is a BEST one. They vary by service, coverage, and cost. anyone buying one should do their research

"Best" is in the eyes of the beholder. 

Warranties aren't always the answer and don't always cover as much as people think they do. There is no best.

A really healthy savings account.  Home warranties are in the business of making money.  It's unrealistic to think you are going to pay $400 and get systems replaced for a meagar deductible when they fail.

 The best home warranty available....

It really depends on where you live since the home warranty company will sub out all of the work which will greatly influence the service quality.  I have clients that love them and others that dont bother with them.  I always ask my buyer clients if they would like one and sometimes I will purchase it for them, particularly if they are a first time homeowner.  It gives them peace of mind even if they never use it.