Rear Wheel bearings - what type?

Hi folk,

My 8.75 is growling at me and if I find out the rear wheel bearings need replacement I will need to decide what to replace them with.

I currently have the sealed Green ball bearings - only 1->2 K miles on them actually. I've heard some say they are not recommended for street use. Wondering if I should consider going back to tappered rollers such as Timkins.

~Bill