Hey just thought I would give you some words of wisdom, being a person who has been through almost all of these!
First is first, forget the ones with no warranty or help growing. If you do not need a warranty or live help with growing you prob do not want a kit.
SECOND FORGET the crappy...
I have had a super closet and anyone that is posting such "AMAZING" results and is using such sales talk to speak about the product "wholeheartedly recommended " without even using the "beneficial co2". UGH ITS ALL BS, they control almost everything that you read about it anyway. The truth is...