hello dudeman,
i will only ever use the best dirt available to me, for seeds and seedlings i use john innes no1, for my quick growing stuff i will use john innes no2 mixed with a handfull of worm casts, and for the slower stuff i use j/i no3 and a large to a couple of handfulls of worm casts, i dont know if its available in your country but here in the uk its a highly recognised and very well respected growing medium through out the garden and and floral industry i would stand this up against any other growing soil any day, i fully reccomend it, its not cheap, but then again if i had to buy weed thats not cheap either. i think its deffinatly 100% worth while to grow in the best grow medium you can, this i believe is more importent than the feed you use, allthough if you combine good dirt with good feed then that can give fantastic results,
peace mate ............. happy .................