Personally, I would stay away from the mixed bags. they seem more gimmicky than anything else, but that is just me.
I just purchased this
. I have only tasted one of the peppers so far (Talamanca del Caribe). It is quite nice. I bought a 9" Magnum Unicorn peppermill (something I have been meaning to buy for a while now) to use with these corns. I am happy with the Talamanca del Caribe, but I can't say is is any better than the corns i get from Penzys. I am certainly happy with the purchase though.