2006 4x4 Sierra front hub bearings

I recently changed front bearings on my 2006 Sierra. I changed both sides. The other day on the way home from work I noticed a slight vibration coming from front end around 60mph. It didn't last very long and went away. Today on the way home from work I took the eway and the vibration was present around 70mph and stayed there. It's more in the the floor boards than in the steering wheel. I replaced both front bearings with timken bearings. When I got home today I jacked the truck up to check everything under front end. Everything checks out. One thing I did notice is the drivers side hub had a little grease oozing out of it. The passenger side didn't have any. Is that normal? I torqued everything with a torque wrench to specs. I haven't rotated tires to see if that would take care of vibration yet.

Did you buy quality bearing assemblies or cheap chinese ones