There are so many different tires available that it can get quite confusing. For me, it comes down to what is most important in a tire. Just getting high mileage is not what is most important to me. The FZ is just not a heavy bike and the tires that can provide a lot of mileage do so at the expense of grip. Being a cyclist of limited skill, I have at times put the bike in a situation that is, let's say, \\"borderline\\" for my skillset. If, at times like this, you are riding on a tire with limited ability to \\"grip\\" the road, then a crash is the likely outcome. Sure, if I could guarantee that my bike would never be in this situation, then give me long-life and lots of mileage. But I can't guarantee that and at times actually even intentionally push my envelope. So I personally prefer to buy tires a little more often but have that extra \\"grip\\" should I make an error or push my skills, and need it to bail myself out of a bad situation. I try to choose a tire that makes a reasonable compromise of grip vs. mileage. For me, if I can find mileage of say 6k or so, with pretty-darn-good grip, I'm in.
Sure, I can easily find tires that will run up the miles on the odo, but I have a desire to twist it on occasion and I have completely lost my desire for the paramedics to pick me up out of the ditch anymore. I'm getting old and I just don't heal as fast as I used to.