I've been using a Pinecil which is USB-C powered. It heats up in seconds and the temp can be adjusted easily. The big plus to me is how small it is. It's so much easier to handle than a standard iron, and the tips are push-in and can be locked with a screw so they're easy to swap.
pinecil can be battery powered too and I've had a good time with mine. granted the battery is either a laptop power bank or a drill battery, but it's still portable enough for me