I've put 24,000 miles on my '21 RT and it is running as well as it did brand new, but it lacks some of the newer features. I'm getting old and lately I've been thinking that I should splurge on whatever I want, since I may not have many more years for riding. But I wonder if the newer Spyders are different or better enough than what I have already to justify spending a likely $15-20,000 for essentially the same bike? Any thoughts?