I have a lot of friends who have the MDM tags, which they are happy with, but I'll admit that I bought mine mostly as a fluke. I had already "liked" their FB page, so I came home from work one AM, and she had just posted, asking if anyone would like to buy a tag with a skull & crossbones already stamped on it, at a reduced price. I have a dog named Pirate. It seemed like serendipity.
The skull she had stamped on already took up a fair bit of space, so that side just has his name. (the reason she was looking for another home for this tag was that she'd stamped the skull on without leaving room for the writing she needed). The other side says "if you can read this, I've lost me ship", with my phone number, and another, smaller skull stamp. I came up with the phrase, and let her figure out how to fit it all in nice, the 2nd skull stamp was her idea. If I'd wanted more contact information, it might not have fit well, but I only wanted my phone number on it anyway.
I'm very happy with it. It did take awhile to get because there was a little breakdown in communication, since we were emailing back and forth about it, and she had told me she was on the road to regionals, she lost track of the email, and I was too polite to nag. Once she got back to it, a couple weeks later, and we finalized the plans for it, I had it within a few days. Since it was a special case, I consider that kind of understandable. I also didn't pay for it until I'd received it (that's when she billed me), and wasn't in a particular hurry for it anyway, so waiting a few weeks wasn't that big of a deal to me.
I've only had it a couple months, so can't really say anything about durability. The price was fine, obviously, since I got a discount, but I think their tags are cheaper than Fetching Tags anyway. For awhile, everyone seemed to get Fetching tags, and many people still do, but I just find them too spendy.