@WildBill will be your living soil man for SIPS, i have tried it and i think i would go broke having to keep up with that style but it is organic and possibly the best method i just do what is cheap for now.
@Cerebral Goo hope i helped a little, just make a diy bucket and try it out, youtube has many videos on how to make SIPS. look up gardening with leon, he is the OG SIP man
From the little time i've been able to devote to sip info, was thinking about using a supersoil in the bucket, letting it dry out and top dressing with some craft blend and build a bloom on occasion.
Will hit Bill up as well and buy one this week and see how it goes. Bought an earthbox a couple months ago, but gave it to a guy that had been talking about them and knew he was limited on funds. He's using build a soil that he already had and his plants are lookin really good.
Thanks again! and thanks to @Tattoochase as well!