Not me!!! I'm perfectly happy with and satisfied with my 3 year old Nucleus Plus unit, which I'll be enjoying for years to come. All my high end audio purchases are carefully selected with the intention of me keeping them for the long-haul, and me not stressing my finances out by trying to keep up with every upgrade that comes along, unless I feel that the upgrade is worthwhile enough and is compelling enough to me. For instance, my speaker cables are over 14 years old, and my speakers have been around for just about the same amount of time as my speaker cables, and I still enjoy the heck out of them with no intentions to replace them. I have recently (over the past few years) upgraded all the other cables in my system only because I thought that upgrade to be worthwhile. My system, in it's current configuration, will remain the same for many years to come.