Hi and welcome.
Your torch requirements will be listed with the torch you buy. Some are oxygen hogs others are better. The torch you buy will depend on price, the fuels you can afford, which fuels you choose and what you want to create will help you decide on which torch..
ARRGGGHHH. I just gave you more research to do .
HINT: torches...Alpha, Cricket or Mega Minor
Good luck with your new studio.