Right now I'm using Fox Farm Lite Warrior as my seed starting mix, although I've had great success using Miracle Grow Seed Starting Mix. I like my seeds to start off in one gallon smart pots then by week 3 or 4 I take them outside, making sure to harden them off over 3-5 days before exposing them to full sunlight. Outside I use raised beds, containers, and I have some plants directly in the ground. I like Kellogg Patio Plus potting mix the best because of how cheap it is. $5 a bag vs $25 of Roots Organic. I still try test out the ocean forest and roots organic soils, particularly in containers where it's cheaper to run them, but I won't ever fill a large raised bed in them, its just way to expensive and the results aren't that much better.
Not sure if they still do, but for a long time Kellogg based out of Ontario, California was making some of the Miracle-Gro Organic potting mix for Scotts. For what you pay for MG organic I think it's a bit of a rip off. Yeah it's certified organic, but there is hardly anything good in it. Scott will only say it's made from natural slow and fast release fertilizers which doesn't tell you anything. It won't kill a mature plant, it's perfectly safe to use when transplanting, but there are better choices for organic gardeners.