Summary: Rhino 5200 is great for network and electrical panel labeling. The Polyester labels are very wear-resistant, but have a memory so aren't good for tight diameters. If you're labeling flat surfaces go with Polyester. The other tapes are Vinyl and Nylon, both are flexible but Vinyl can be used in direct sunlight. (The above took a very long time to figure out; most sites, including Dymo, won't really tell you the basic things you need to know.
Summary: Don't get sucked into buying a lower quality Office Supply label maker. This Dymo 5200 is the real deal. And, with the rechargable battery included, the Dymo 5200 is actually less expensive than the others. In our maintenance storerooms, we have three Dymo 5000 and six Dymo 5200 labelers in use. Perfect!