Priorities...


Which would you prioritise for an upgrade - mono blocks, pre amp or speakers? 
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Yes if I could afford it I would certainly keep the M250i monos...
I was initially considering used Rogue Apollo monos as a replacement...
I have already thought about what you say regarding defeating the speaker upgrade so wanted the opinion of others.

I realise the alternative is to not bother & just continue to tweak the system to completely optimise its performance.

Maybe a nice tube preamp would be the solution to your problem! It seems like the most inexpensive way to help you fund the new speakers you want. You know the old saying, "Robbing Peter to Pay Paul".