Frontera and Choncha Y Toro are from the same people. I had a friend recommend another from the same people; Cassilio el Diablo (sic) I bought a couple of bottles(really, really good), but the “Choncha Y Toro Frontera merlot” was so close and cheaper, I sunk to the lowest level and continue to buy/drink their Merlot; your favorite blend is good, as is the Shiraz. I find the Shiraz, after opened a week to be bit bitter. I haven’t tried their whites, have you?
I'm more of a mirliton wine guy.