I bought the Knight & Hale estrus. 2 ounces for the price of one. It says "We give you more for less by collecting fresh urine with our advanced collection process. Not sure what the premium "blended" means.

It smells just like the rest of them. I am surprised that more people haven't tried it. 2 oz for half the price...thats at least reason enough to try it out anyways. I went to a big R store and they were almost out of the Knight & Hale estrus. I thought it was worth a shot... Trying to get out sometime soon to try it out!

Good luck!