Can anyone recommend a good / fair / reputable / super value auto extended warranty plan?

I understand the market place is quite confusing and slippery and one needs to be careful, esp. with "Mechanical Breakdown" Plans.

I'm looking to buy in next 20 days? I'm thinking of getting 4 yr 85,000 protection or 5 yr. 100,000 mile protection.

Suggestions would be greatly appreciated.

Thanks!T Williams