I see these threads all the time and there is never one correct answer IMHO.
I usually ride over 30K/year so I go thru a lot of tires. My Tenere is a little over 1.5 years old and it's over 47K miles. I have used the PR3 & 4's (great tires) and I currently like the Continental "Attacks." I get around 8-10K out of both brands, they both perform nicely and I feel good in the rain on both.
That said, I have buddies that have the exact same tire and ride similar miles and get different results. It will depend on several factors, how you ride, your weight, road surfaces and mainly straight or twistie roads.
Just my 2-cents. -JEP-
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