Sadly, no matter which carrier you look at, the coverage maps are like playing a shell game. The consumer ultimately has the most to lose and usually loses in the long run. Not trying to blame any single carrier because they all do it.
The best advice is to choose a carrier that works for you where and when you need it. Too make things worse, many of the "so-called surveys" that are conducted annually (such as Consumer Reports) are radically biased and inaccurate making it all the more difficult for the consumer.
If I'm annoyed and you're annoyed, does that make us a paranoid ??
Sarcasm is a fine art...
"Don't believe everything you think"
It's not a matter of if you win or lose, it's how you assign the blame