If you do, get them to fit a genuine renault part!! The abs sensor which sits abouve the ring sometimes needs to be set up to get a clear reading if it's been boshed by the split / loose ring, it's a daft measurment aswell (set to fractions of a mm) so i'd be suprised if you can do it by eye.
Myself and another lad on here both suffer from slight 5k rpm vibrations from the shafts because they are not geniune Renault, it is not serious and it doesn't spoil performance but it is due to the drive shafts (fitting and part came to £350 irrc on both sides so not cheap even for pattern parts)
Renault drive shafts aren't badly priced but the gimp behind the desk couldn't tell me which ones my car took unless I took my car to renault so "they could do the work" and at £75 per hour.....