I think the TS100 has a big advantage that you can easily rig up a barrel DC connector to XT60/XT90 connector, and use it to solder directly from a charged portable lipo battery.
I want to say the Pinecil, which I've been anxiously awaiting, is significantly less expensive... But shipping of $11 (though looks like I accidentally selected courier shipping so it's more like $50) brings it up closer to parity with the TS-100 kits you can get on Amazon for the TS100s.
I'm still really excited about the Pinecil though! I don't solder a lot, so I'm looking forward to having a quick kit I can whip out instead of my whole toolbox of soldering tools with my ancient but trusty Weller.
Same, super excited to have something on my desk rather than setting up my Weller! I would argue this is closer to a TS-80 than a TS-100, which cost usually around $75.
https://www.google.com/search?q=ts100+lipo+cable&client=fire...