Formula 419 Potting Soil..Anyone used it?

There's a company called Four Seasons Landscape Materials in my neck of the woods. (Nevada County,CA) They have a potting soils called Formula 419, Coco Loco and Grow "530". I've heard that people have had really good results with the Formula 419 and I'm thinking of trying it out.. Anyone on here ever used one of these? Just wanted to get some feedback before I order. Thanks...

got some 419 soil last year. we were all super stoked with it. definitley ordering again this year. they're bringing my buddy a load all the way up in humboldt. hope this helps