I use this one and it works ok:
https://www.amazon.com/Bernzomatic-ST250-Micro-Torch-Kit/dp/B0000CBJBQ
Got it for soldering stuff my 25w iron couldn't handle as it was the best I could find at the store. Then I ended up getting a 60w and 100w iron on amazon and I just use the bernzomatic as a torch for stuff like loosening pinions and whatnot.
https://www.amazon.com/Bernzomatic-ST250-Micro-Torch-Kit/dp/B0000CBJBQ
Got it for soldering stuff my 25w iron couldn't handle as it was the best I could find at the store. Then I ended up getting a 60w and 100w iron on amazon and I just use the bernzomatic as a torch for stuff like loosening pinions and whatnot.