Not a stupid question. It is just pretty open. There are so many different nutes out there, and so many opinions on what is good or bad. SOme things to consider:
1. Do you wish to grow organic?
2. How big is your reservoir?
I currently use technaflora. I am on my second grow with them. The first was a soil grow, and the second is a DWC Hydro. While I have been very happy with them....they are not cheap, and are a 6 bottle mix. Going to an ebb and flow setup with a 40 gallon reservoir, and want to go organic. So I will be switching....likely to BioBizz.
How this helps....and remember...it never hurts to ask.