That's funny...my friend has a v10 now and he has over 135,000 miles on it. Drives it every day,pulls a boat,toy box(35ft), bobcat thing. Down side is the gas. He gets 10 to12mpg.
Its a good motor don't get me wrong. My dads F250 has one and since 01 its had a bed full of concrete hose and a pump hooked to it, around 8k. Never really given any problems except the coil packs and its around 180k. But my truck which is the same except diesel gets better mileage towing and around town. I guess its more so personal preference.
But I also have a 6 position chip, a aftermarket intake, and a 4in straight pipe exhaust. So that helps with the mileage. My truck is just under 200k and I get close to 18mpg towing my loaded 20 foot dump trailer. And around 22 on the highway not towing and unloaded.
SoCalPsd-Corey