I have one of these:
Costs more but much bigger capacity and flame. Nice controls but a little fiddly to set up because of the safety features.
Honest 503 pen from FastTech:
http://www.fasttech.com/products/0/10001862/1134600-honest-503-pen-style-butane-jet-torch-and-lighter
I’ve had a couple of these (gifted one), they don’t get quite as hot, less capacity but controllable. I often use this as it’s easier to use than the larger torch above.
Lastly, my oldest is just like this Micro Torch, though I am not sure it’s the same brand, it has the metallic attachment and internal lighter. I used to use it for heat shrink before I got the rework station. It doesn’t produce a flame though.