Product review (4 stars): replace element, replace thermostats
Works great, fit perfectly.  My thermostats were probably fine, but replacing them go hand-in-hand with replacing heating element.  If you've already accessed your dryer's heating element, you know that it's a small pain.  Why go in there again if you don't have to, and it's a pretty small price to pay.  And while you're at it, vacuum out the inside of your dryer.