Diff or Wheel bearing noise?

[djvx]

I drained and replaced the front diff fluid when I did the drop last weekend. I'm gonna grease the driveshafts (is that as easy as it sounds?) and change the oil in the rear diff hopefully this weekend. The noise has slowly increased over time, so I doubt the shaft is dented but I'll give it a once over when I'm under there. If all else fails I'll just get a louder exhaust and hope it doesn't explode before my next upgrades.

Any update on that vibration?