I use these labels, in galvanized, and after 6 or 7 years, I've had zero break on me. I love them. You can order the wires in stainless now too, which is great for anyone who doesn't want galvanized. Shipping is super fast, and the prices are great.
For labels, I use a P-Touch label maker and I use the TZ tape with the strong adhesive. I've never had a label fade or fall off, and this is with a huge pile of snow on top of them, year after year, before moving to Idaho.
Many people complain, just like I did, about the label maker wasting tape. It does do that. If you are making lots of labels, just put a space between the names, and cut them apart after printing. It saves a huge amount of tape that way! Not my idea, but I was thrilled when I saw it!