I've been noticing a bit of a "hum" while driving, that I can now start to feel through the floorboards if my foot is flat, I can sort of feel it in the gas pedal and steering wheel as well. I can make it disappear completely if I turn slightly left. Makes no difference if I'm accelerating or decelerating and does not go away if I shift into neutral. I'm 99% sure its a front bearing and based on some other threads I've been reading through I'm going to guess its the left side. I did struts within the past few months and tried to look for bad bearings but found no symptoms. Again, based on some older threads, still seems possible that this bearing is bad so the plan was to replace both fronts at the same time (truck just ticked over 100K). But the options seem a bit more expensive than I had been hoping for. So are there any brands that should or should not be used? Off the top of my head I figured the motorcrafts were likely the best option and surprised to see 2 choices. The "OE Design" and the "Service design". Any idea the difference between them and/or if I should look at something different altogether like Moog?