Dymo LabelPoint 100
This is the least expencive I could find from the Dymo assortiment. Important for me was that the printer should be able to print whatever sized "white text on transparent"-labels. If your panels are black, you could use white on black labels.
You can find lots more info on the Dymo website about the capabilities and specs of this printer.
This very printer can host 9mm and 12mm tape cassettes. That was important because "write on transparent" isn't very comon at all. Together with the printer came a free 43113 casset which is Black/White 12mm tape. It is glossy because there is no transparent tape to be found which isn't (or maybe with black text, not sure). The casset I am using is 12mm White/Clear 45010 which can be bought.
Here's a picture of the labels. I print them, cut them out as much as possible and then puzzle them into place onto the panels.
