Is the upgrade from Scout 1.1 to the Prime worth it?


I know this is totally subjective. I am looking to hear experiences from anyone who has made the change as well as opinions on weather it would be a worthwhile/noticeable upgrade given my current setup.  Would the investment be spent better elsewhere?

Current system:
Primaluna ProLogue two (stock tubes)
Icon Audio ps1 MKII (MM only) reissue gold lion ECC83 tubes
VPI Scout 1.1 stock except for the counter intuitive 
Ortofon 2M Bronze
VPI 16.5 record cleaning machine 
128x128wilson667
Wilson667, the upgrade to the Prime from your Scout will bring several things that are notable, first the larger platter which will accept the perifial ring is the upgrade that you will notice the most when that is added, the 10 inch arm is quite the upgrade in itself whether you believe in the 3D technology or not the 10 inch arms do a lot of things better like the first and last tracks of each album are notably better tracked by the longer arm, I have a 3D arm and a Classic metal arm and love them both for different reasons. I believe also that you are going from a 600 rpm motor to a 300 rpm on the Prime, also a plus. The real deal from VPI looks to be the new Scout Prime Special Edition, check it out.
I went from the original Scout to a Prime with no regrets.  Every aspect of the sound is better.
I went from the original Scout to a Prime with no regrets. Every aspect of the sound is better.

+1
So it would seem the  consensus is that the prime is a worthwhile upgrade from the scout when talking about turntables. I still wonder if the rest of my system is worthy of the upgrade or should upgrade other pars of my system first?