SPAZTICUS said:
Perhaps a second hand Nap 250 would solve my upgrading path to better speakers. Any comments?
It will certainly move you forward but very much along the same path that you are actually already going.
Adding the 250 and then better speakers is the traditional way forward and will, pretty much, give you more of the same. Arguably these are just the first steps in your progression, after these upgrades you will want to get a 'proper' pre-amp, maybe change the power supply, improve the streamer, then better speakers (again) as the 'effect' of the improvement wears off.
This is the normal upgrade path, and yes the sound quality will get better each time, but at no point will you make the kind of changes that delivers the contol, clarity and presence that will make a real difference to your listening experience.
As always, this is your money so your decisions, lots of people like the step by step upgrade approach, others do not, up to you.