I have done most of my grows in super soil, after trying the fox farm trio in soil and hempy buckets, super soil has by far been the easiest and most successfull growing method for me so far. I would like to get into mixing my own soils eventually but for now I stick with what's easy - just following a recipe that I know works. So I definitely recommend SS for someone that is just getting into organics. (subcool himself is a complete ass with an overinflated ego and we're not missing anything from him being gone, imo, but he does have a great soil recipe).
for the ones that are ready for flower, I'd say it;s just too late this time. but if you mix up the supersoil now it will be ready in a couple months for your next run. the soil needs time to "cook" or break down all the ingredients to a better form that the plant can use. if you try and use the soil before it's cooked enough you may burn your plants and you won't have the best results. and don't fill the entire pot with SS, it just goes in the bottom 1/4th to 1/3rd
edit - oh ya and about the bickering, I believe coolman is wrong about hydro being superior overall (though I won't claim to be experienced enough to know from firsthand knowledge), but I know he is right about sugars being produced in the leaves and not being responsible for the taste of a bud. if the plant sugars made buds taste good then everyone would be sprinkling sugar in their joints! lol. if you've ever burned sugar you know how disgusting it smells, doesn't matter whether it's glucose (produced by plants) or sucrose (table sugar from the store) they're both gross