CO2 or Hydroponics?!?

So i have a limited amount of money, and i am trying to figure out which would be the best when it comes to the yield and the speed of the grow from beginning to end:hydroponics or Co2? i know that using both together would be the best, but if i can only afford one which route should i go?

Thank you i apprecitate all comments on this

co2 is really only useful if you have your grow dialed in.

hydro is a whole new set of things to learn.

if you use the co2 and you still want more you can upgrade to hydro and use the co2

if you use the hydro stuff and hate it then youll have to get rid of it to buy co2

yea thats what i figured, because then i would have to worry about all the chemicals and b.s. Would Co2 get me as great of a yield as hydro, or is it to hard to tell with all the variables?