I’m 4-and-a-half years out on my revision to THR (a la De Smet) and going strong. I would also say that the two year mark was an important dividing line in my recovery from THR surgery. After that point I never had to worry again about overexerting myself. In terms of performance, I see very little real difference between the THR and the HR. Maybe in some very subtle ways the HR excells a bit but both serve quite well up to this point.