I am afraid, digital has to be quite expensive to sound acceptable, what you did you simply took it close to that.
Many good points - recording, room, level the system already at, synergy. I no longer think in terms of upgrades, I am not going to upgrade anything in my current set up, I am going to build a new system over the years, so in this sense it is going to be in a state of flux for some time but it will still be sounding better while in the process. I think, I know the destination, where I want to be with my new system, the rest are minor details. Still, if you intend to keep them for long - speakers first, then either power amp or source, both is better.
Many good points - recording, room, level the system already at, synergy. I no longer think in terms of upgrades, I am not going to upgrade anything in my current set up, I am going to build a new system over the years, so in this sense it is going to be in a state of flux for some time but it will still be sounding better while in the process. I think, I know the destination, where I want to be with my new system, the rest are minor details. Still, if you intend to keep them for long - speakers first, then either power amp or source, both is better.