Well then its up to you which you get, but like I said I didn't find there was much difference between the two except price, although the steering did seem a tiny bit better with the new ones on but that could be because the original bushes that I took off (even though looked fine) one was rather softer than the other (rather noticable actually) so not sure if that was an issue with mine as I'm sure they shouldn't be like that
Also oddly you get grease with the powerflex ones which I didn't use as I cant see that being a good idea. You get the feeling they are just added into the package because all there other products have them in there