Hi Steve!
I've been following this thread quite closely has the RP6 is as well in my sight for a future upgrade!
But in your case i think that before the RP6 or the TTPSU or a new cartridg (that i think it should be in second place in your upgrad list) that you should think in upgrading your speakers set, as it has been said before.
Look at the RS3 or at Neat or at Totam ( take a special look at the Rainmakers) and just in case, if you have the recources to pull a demo the Dynaudios...
A new TTPSU is not going to make that sonic difference that you are after! And when you buy the RP6 it will be included in the price.
A new cartridge,yes it will make a sonic difference, and can put it in your future RP6.
But a new set of speakers is the way to go, there is so much that you can squeeze from your actual RP3 with a new speakers set....
I go often to my rega dealer and he has connected to a Rega Brio R a RP3 and a RP6, the RP3 with a Goldring 1012gx like my own, and the RP6 with a Dynavector 10X5, the RP6 is in fact a superior TT but i dont know if that superiority is just the TT, i would like to know the role of the Dynavector cartridge...?! :?
It is your money, but look first at speakers, second cartridge, and for last a new RP6.... Is the way i se it.
And how about the Aria... :twisted: I'll go to my Rega dealer this weekend to have a demo, he has just received the Aria today...
best REGArds