I chose Ting because I usually don't use the phone a lot, except for once in a while when I'm out of town. Then I use it a lot. So paying for what I use appealed to me. I don't mind paying for what I use, even on those rare occasions when I use a lot.
What I DO mind is being unceremoniously cut off when I'm out of town and that is what happened to my wife today. Apparently, there is an unspoken, unadvertised 5 GB limit that has to be reset if you go over.
What I read when I chose Ting is the following:
"If you go beyond the XL level for minutes, messages or megabytes of data, you'll switch to pure per-unit billing. Voice minutes beyond XL are billed at 1.9¢. Text messages are billed at ¼¢ and megabytes are billed at 1½¢ (that works out to $15 if you use a full gigabyte). "
Notice that there is no mention of any limits here. You can study the Ting web site until the cows come home and find no mention of limits.
As I said, I don't mind paying for what I use, but what I DO REQUIRE from you is to LET ME USE WHAT I NEED.