I can testify that the ME-880 combination is the most long-lasting tires I've had on the FJR. Where I'd average about 6,000 to 8,000 on numerous rear Azarros and original Bridgestone and a solid 8,000 on my PR......I went 11,000 miles on the ME-880 with lots of tread left, but howling badly. Nor were they even close to my favorite in the rain, a little harsh feeling, and one has to get used to the larger diameter tire in a 170 choice.
That has left me an ME-880 front with about half it's tread left, no signs of cupping, but definitely weak in grip compared to a new BT-021. I'll probably swap out this spring with a new front.
Skooter's long-life and tread-limit-exploring nature aside I haven't seen anything with the same relative longevity. If he were to run an ME-880 I suspect he'd get over 20K off one.
However, I would only consider running them if I'm doing something like the IBR where I wanted to go the whole distance without swapping tires.