Hakko clones are pretty widespread. The quality will vary between them, but it is hard to know if spending $50 on one version is better than $25 on another.

Fortunately, the tech isn't difficult to clone, and it's down to the components and build quality. Poor soldering inside can be fixed... Yes the irony of that is palpable.

The tips are usually not as good of quality, but real Hakko tips are easy to get and not unreasonable in price.

Hakko replacement parts like heaters and other components should work as well.

There is a new iron available that I think would work well... TS80, it is an open source design from a Chinese company, that is branded a few ways, Amazon is a good source. Pay attention to the tips that come with it.

It will run off of a fast charge 3 compatible battery pack. Ankler makes the best battery packs at reasonable prices.

Overall you are looking at a price of $130ish with a battery pack for portable use. Direct heat tips small size, and good power delivery makes it a good option though.

You need to adjust the options/settings to get full power, but otherwise it's good out of the box from the reviews online.