The shanling is way too weak for anything but the most efficient speakers. Going with any of the Music Halls will get a lot more power and you can get a class A amp which will get you a lot of warmth. I've seen them used for $500-700. 50 watts will drive most speakers.
Elevick
you are right, highly efficient speakers will be needed.
Isn't it what I suggested in my post?
I would recommend something like Fostex FE168E∑ 6.5" Full Range Sigma Series drivers - about 94.5 db ...which is pretty efficient. Mounted in the horn loaded enclosure ($100-$200 to build) and you have a winner.
A very nice, tube- all in one system that will holds its own in the $1000 price range category.
Bass will be dynamic, punchy with beautiful middle-range and transparency.
But then again.....I could be also WRONG.
Best
Mariusz