I'd get the SP.
The SP is rated up to 10.000 km before it might need service, the SON supposedly goes a lot further than that. So if you do lots of miles the SON is nice for peace of mind, if not save yourself some money. Both are very good
Who rates them at ‘up to’ 10,000km?
They themselves do saying the bearings are good for at least 10.000 km, many people have reported putting in much more distance than that, mind
@miro_o started
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I'd get the SP.
The SP is rated up to 10.000 km before it might need service, the SON supposedly goes a lot further than that. So if you do lots of miles the SON is nice for peace of mind, if not save yourself some money. Both are very good