I had the TrakPower unit for a while. There is a reason it's basically rebadged. It quit working after a while (maybe 6 months of occasional use) and I opened it up to take a look. It had a Hakko board in it with shoddy solder joints on it. It's like Hakko sold off all the sub-standard parts to other OEM's to try to use. I used another iron to fix the poor connections and it worked after that.
My opinion is get the original real deal and not have to worry about it. I use a Hakko now that was years old when I bought it used and it works great.