I’ve used both of these fairly extensively so happy to weigh in here.
The best option for you will depend on how you want to use your stove. Go with the Jetboil if you’re mainly looking to boil water for hot drinks and dehydrated meals. It’s efficient, lighter, and works well even when it’s windy. It’s also pretty straightforward to use, making it a good option for short outings like a one-night hike or car camping.
On the other hand, if you’re keen on actually cooking your meals, Trangia offers more versatility. It’s a bit on the heavier side, especially when you factor in the weight of the methanol fuel. But it’s reliable and better suited for more involved cooking.
In terms of fuel, the Jetboil uses propane canisters, which might be a bit harder to find compared to methanol for the Trangia. Not too much of an issue though.
For some multi-day hikes, I’ve taken my Trangia just with the kettle to heat water for dehy meals and it’s worked fine. But you do need to find a reliable storage option for the metho.
So, to sum it up, Jetboil is excellent for quick water boiling, while Trangia gives you more cooking options. Both are solid choices, it really comes down to what you plan to do on your trip.