I've found my keeper amp - Sugden A21 Signature. This trounces everything else I've had in my front room and has stopped my box swapping. Amp sorted. I will only change if it breaks and cannot be fixed or I move and it is no longer powerful enough for the room (super unlikely).
Streamer sorted. Cambridge 851N. Unless I get into silly realms of spending this can't be bettered, for me. Again not changing unless it dies.
Parts of system will get tweaked:
My DAC (highly modded Jolida FX MK2 valve DAC) I want to side by side with a D33, just because I'd like to hear the D33 - I'll keep whichever I prefer.
PMC 20/23's. I like these but I want to get a set of ProAc D20r's in here for a listen.
Bought an Isotek minisub. This works. No desire to go up the very expensive isotek chain.
All in all I'm very happy with my setup and it makes me smile and get lost in the music every time I listen. No urge to imminently change anything. This was reinforced at the recent audio show. There were some monster expensive systems on show, but I left still very happy with my own kit.